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This FAQ has many guides and solutions - reading this before asking for help could save you a lot of time, as it accounts for the vast majority of issues people run into that we're aware of but can't fix on our end. Supported versions and platforms We only support Forge here. We cannot help you with Fabric, Spigot, etc... We support all versions under the tiered support policy. Full support for 1.21.4, 1.21.3, 1.21.1, 1.20.6, 1.20.4 and 1.20.1 Legacy support for all other versions Minimal support for select versions (e.g. 1.20.3 - use 1.20.4 instead) More details here. Rules Piracy (aka "cracked launchers") and cheats (aka "PvP clients", "x-ray mods", etc...) are strictly forbidden here. When you need help, please always make a new thread. Do not post in old support threads. When making a new thread, you must include a link to your log on https://pastebin.com or https://paste.ee. Instructions on where to find this and how to upload it are in this forum post. Exit/error codes Here's a list of exit codes and what they mean: Error code 0: Someone clicked "Quit game" and the game closed successfully Error code 1 and -1: The game crashed, refer to the log and/or crash report for details Error code -1073741819: A game library crashed. Update your drivers and make sure you're using the right Java version Where can I find the debug.log and crash report? Official Minecraft launcher CurseForge app MultiMC/PolyMC/Prism launcher Where can I find the installer log? Where can I find the launcher log? Most of the time you don't need to share this, so only share it when asked by a support volunteer or when you're unable to find any debug.log or crash report. Official Minecraft launcher CurseForge app What version of Java do I need? | Minecraft version | Forge version | Java version | |-------------------|---------------|--------------| | 1.20.6 or newer | 50.x or newer | 21 | | 1.18 - 1.20.4 | 38.x or newer | 17 | | 1.17.1 | 37.x | 16 | | 1.16.5 or older | 36.x or older | 8 | How do I install Java? Windows macOS Linux How do I install the Forge client to the official Minecraft Launcher? How do I install the Forge server? Where can I find the forge.jar to start my server? Forge immediately crashes on launch without any mods installed, how do I fix it? Where can I find Forge mods? https://www.curseforge.com/minecraft/search?page=1&gameFlavorsIds=1 Make sure you download the right version of a mod for your Minecraft version. My game is lagging, how can I find the culprit? How do I update my drivers?

Ive thought of something like this myself a while ago. Maybe it's something I could take on.

Honestly, the forums are a back burner thing. Not many people use it. Best option is discord. I know that I haven't looked at the forums for more then admin tasks in quite a while. You're also best off not following tutorials which give you code. Knowing programming and reading the MC/Forge code yourself would be the best way to go.

I myself am quite new to the modding scene, I started modding in February but have been in development hell a lot and have struggled to focus on one mod though I have been developing the current mod I've been working on since September and have made a lot of progress; during this time I have found a lot of helpful resources and have learnt a lot of things. 1. You can, I have had no Java experience previously and since modding have managed to be quite knowledgeable in Java. 2. Modding does not require massive teams, I and many others work alone, though having a team is certainly helpful in the modding process to get things done in a quicker and more organised way. 3. I absolutely have to recommend ModdingByKaupenjoe, he makes loads of tutorials for Minecraft from 1.16.5 and above with support for Forge, Fabric, and as of his 1.21 tutorials, Neoforge. These tutorials are really well made, covering almost every modding topic, (such as items, blocks, mobs, worldgen, etc.) and are pretty easy to follow, and Kaupenjoe always leaves the link to his GitHub repositories where you can view the code of that tutorial at your own pace as well as linking textures in the description of his videos for you to use. These forums are also quite good if you need help, though I have found that it sometimes takes a little while for a response but it is always worth the wait; from my experience the people on these forums have always been kind and helpful. There are also user-submitted tutorials that may be helpful as well. Using GitHub to search up a certain class that you are wanting to use in your mod is also quite helpful, the video I have linked goes into more detail. I would also recommend planning out your mod before you make it to have a clearer idea of how you want your mod to be, including sketches and annotations are also a good idea for this. It has helped me make progress a lot quicker when programming as I already know how I want things to look/act. I hope all this information helps!

Oh yes, the chameleon was the problem not sure why but it works without him, thanks!

I have a problem that I'm facing. Lets say you have a Modded server with AE2 or any other mod. Lets say you place a AE2 Block like you make a whole network. Then one day you decide to remove AE2 from your mods folder. You play the game and your blocks are gone. Then one day you want to add AE2 back but your blocks are gone forever. I need a mod that saves blocks and their block data even though its been removed. I have a server that oscillates from Modded to Vanilla every other day. And it's crucial to save modded block data. This also would apply for entities and items. Yeah that's basically it I don't know how easy it is to make a mod like that. Where the block/item/entitiy data doesnt get remove but thats currently what i need. Also if possible maybe create a temporary block replacement there until the mod has been added back.

By God, it worked. I'm.. in tears. Over the internet it wont be easily conveyed, but I'm deeply grateful to you. I got back into both world. As this happened with two modpacks it will probably happen again, but now I know what to do. You've made my week. Thanks ^^

If you are using AMD/ATI, get the latest drivers from their website - do not update via system

Hello, I can make you that mod, add me to Discord L33T#3319

This PR may fix the remaining issues here. It's still under review and hasn't been released yet, but may be merged and released in the next few days or so.

Make sure Java is running via Nvidia GPU: https://windowsreport.com/minecraft-not-using-gpu/ If there is no change, add the crash-report or latest.log with sites like https://paste.ee/

This has already been the de-facto standard for quite a while now, but figured it would be a good idea to properly formalise it and make it clear for everyone. TL;DR: You can ask and offer support for Forge on any MC version, as long as you're not demanding it from staff and can accept that older versions may receive less attention due to people moving on to newer, shinier things. Tiered support policy There are now essentially three tiers of support: full, legacy and minimal. Full support This tier has dedicated channels for help on the Discord, gets priority for documentation, new features and bugfixes, and is generally considered the main focus for Forge development and support. Triage actively ports and backports things as needed for versions within this tier where time allows. The MC versions covered by this follows the existing "LTS" system. In other words, the latest MC version and select versions before it are covered by this tier. We recommend people consider using the newest version possible, as it's likely to be fully supported for longer. Exact versions covered under the full support tier can be found near the top of the FAQ. Legacy support This tier is for older versions of MC that are no longer covered by the full support tier. This tier gets less attention, but is still supported to some extent. To be clear, this is not a "no support" tier, but it is not the main focus. You're welcome to ask for help, submit PRs and help out, but please be aware that you may not get a response as quickly as these versions are generally not as popular anymore and may not have as many people around to help. Staff may still choose to work on these legacy versions and help people, but please don't demand it from them. Please note that due to the nature of the old toolchains used for building legacy versions, developing mods using the default MDK may not work. We also cannot easily publish updates to some of these old versions without your help - if you're interested in fixing this, please reach out to us. Minimal support This is rare and usually only applies to versions of MC where there's no legitimate reason to be using them. A real-world example of this is 1.20.3, which had a data loss bug that was fixed in 1.20.4 shortly after. All mods made for 1.20.3 work on 1.20.4, so there's no reason to use 1.20.3. We will help you update to the fixed version instead, but that's about it.

Hello! I think what you made is awesome! Sadly, I do not have discord. But I hope we can become great friends later on! Have a blessed weekend!

So somehow the Minecraft suddenly started working. I don't know how but it just did so i guess problem solved. Thank you very very much for your help anyway. You took a great care of me❤️

Thank you it worked. I just than set nVidia to be prefered card than.

Update your drivers https://www.amd.com/en/support/apu/amd-ryzen-processors/amd-ryzen-5-mobile-processors-radeon-graphics/amd-ryzen-5-5600h

Thank you very much it works

Add crash-reports with sites like https://paste.ee/ Use Java 17 instead of Java 18 Remove modernfix and cupboard

I have no idea - crash-report or logs are quite different In some crash-reports, search for "caused by", "error" or "Suspected Mod"

It is just mentioned in the crash-report at com.lowdragmc.shimmer.client.shader.ReloadShaderManager.backupNewShaderInstance(ReloadShaderManager.java:114) ~[Shimmer-forge-1.20.1-0.2.4.jar%23427!/:?] {re:mixin,re:classloading}

o7 you are my hero, it works perfectly now can i ask how do you identify which mod is the issue? cuz i might plan to add more and i feel bad being a total noob thanks once again !!!

Remove the mod shimmer

Just test it

Apparently, it was MineColonies issue, but still thanks for the help!

Forgot to reply but thank you alot, Optifine was afterall the problem ran perfectly after removing it 😀

oh that worked, thank you

I went back to using a class (not a block entity) for volcanoes. But I will try this once I can fix setBlock method not updating clients on the blocks set (volcanoes are being generated on the server and only the server via world tick/load event if your wondering).

Thanks, after I deleted the config it worked again. 😁

This fixed it! Thank you so much

thank you

I would like to display the distance of the player from the center of a filled map or from map decorations if present. I have found that the world coordinates of decorations are in the item's tag. However, for banners or maps without decorations, they are not present in the tag. I found in the MapItemSavedData class the coordinates of the center: "centerX" and "centerZ," which would be perfect for my case. However, this class seems to be updated only on the server side. How can I determine the absolute coordinates of banners or the map center on the client side? Thank you very much!

it fixed, thank you!

It worked! Thank you so much!

Hehe, make some copies of all mods and config files used in your modpack. This includes mod .jar files and all configuration files. Then go to Modrinth and create a new project. Upload all the mod .jar files you want to include in your modpack, as well as any additional files or resources. Let me know later if it worked

I think I can go without for now, hopefully a future update fixes it. Thanks for the help, though!

Nevermind! Apparently I forgot to increase the RAM allocation for Minecraft on curseforge after I reinstalled it and it now works just fine. Thank you again for the help!

Use a custom Launcher like FTB App, MultiMC or At Launcher and import this modpack

[09:49:55] [main/INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [09:49:55] [main/INFO]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [09:49:55] [main/INFO]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker [09:49:55] [main/INFO]: Forge Mod Loader version 14.23.5.2860 for Minecraft 1.12.2 loading [09:49:55] [main/INFO]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_51, running on Windows 10:amd64:10.0, installed at C:\Users\diego\curseforge\minecraft\Install\runtime\jre-legacy\windows-x64\jre-legacy [09:49:56] [main/INFO]: Searching C:\Users\diego\curseforge\minecraft\Instances\Enigmatica 2 Expert - E2E\mods for mods [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in AdvancedRocketry-1.12.2-2.0.0-13.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod AdvancedRocketryPlugin (zmaster587.advancedRocketry.asm.AdvancedRocketryPlugin) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in AppleCore-mc1.12.2-3.4.0.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod AppleCore (squeek.applecore.AppleCore) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in astralsorcery-1.12.2-1.10.27.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod hellfirepvp.astralsorcery.core.AstralCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/INFO]: [AstralCore] Initialized. [09:49:56] [main/INFO]: Loading tweaker guichaguri.betterfps.tweaker.BetterFpsTweaker from BetterFps-1.4.8.jar [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in colytra-1.12.2-1.2.0.4.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod c4.colytra.asm.ColytraLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in CTM-MC1.12.2-1.0.2.31.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod team.chisel.ctm.client.asm.CTMCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod CTMCorePlugin (team.chisel.ctm.client.asm.CTMCorePlugin) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in engineers_doors-1.12.2-0.9.1.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod EngineersDoorsLoadingPlugin (nihiltres.engineersdoors.common.asm.EngineersDoorsLoadingPlugin) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in foamfix-0.10.15-1.12.2.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod pl.asie.foamfix.coremod.FoamFixCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod Do not report to Forge! (If you haven't disabled the FoamFix coremod, try disabling it in the config! Note that this bit of text will still appear.) (pl.asie.foamfix.coremod.FoamFixCore) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in Forgelin-1.8.4.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod net.shadowfacts.forgelin.preloader.ForgelinPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod ForgelinPlugin (net.shadowfacts.forgelin.preloader.ForgelinPlugin) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in give-me-back-my-hp-1.12.2-1.0.0.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod xyz.phanta.givemebackmyhp.GiveMeBackMyHpCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod GiveMeBackMyHpCore (xyz.phanta.givemebackmyhp.GiveMeBackMyHpCore) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in iceandfire-1.9.1-1.12.2.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod iceandfire (com.github.alexthe666.iceandfire.asm.IceAndFirePlugin) is not signed! [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in InventoryTweaks-1.64+dev.151.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod invtweaks.forge.asm.FMLPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod ivorius.ivtoolkit.IvToolkitLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod IvToolkit (ivorius.ivtoolkit.IvToolkitLoadingPlugin) is not signed! [09:49:56] [main/INFO]: Loading tweaker org.spongepowered.asm.launch.MixinTweaker from LagGoggles-FAT-1.12.2-4.11-92.jar [09:49:56] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in Mekanism-1.12.2-9.8.3.390.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:56] [main/WARN]: The coremod mekanism.coremod.MekanismCoremod does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:56] [main/WARN]: The coremod MekanismCoremod (mekanism.coremod.MekanismCoremod) is not signed! [09:49:56] [main/WARN]: The coremod PluginLoader (kaptainwutax.memorytester.utility.PluginLoader) is not signed! [09:49:56] [MemoryTesterThread/INFO]: [kaptainwutax.memorytester.init.InitData:initializeConfigs:29]: DataConfig{MemoryTesterVersion, RecommendedMemoryAllocation, UseMenu, CrashWhenNotEnoughMemory, WindowIconDir} at config/MemoryTester/General.txt [09:49:56] [MemoryTesterThread/INFO]: [kaptainwutax.memorytester.init.InitData:initializeConfigs:29]: DataConfig{Header, Line1WhenOptimalMemory, Line1WhenNonoptimalMemory, ButtonStartText, ButtonStartBgColor, ButtonQuitText, ButtonQuitBgColor, BackgroundImageDir} at config/MemoryTester/Menu.txt [09:49:56] [MemoryTesterThread/INFO]: [kaptainwutax.memorytester.init.InitData:initializeConfigs:29]: DataConfig{InfoHeader, InfoLine1, InfoLine2, InfoFooter, RedirectLink, RedirectBgColor, BackgroundImageDir} at config/MemoryTester/Crash.txt [09:49:57] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in NotEnoughIDs-1.5.4.4.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:57] [main/WARN]: The coremod ru.fewizz.neid.asm.Plugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: The coremod Plugin (ru.fewizz.neid.asm.Plugin) is not signed! [09:49:57] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in OpenComputers-MC1.12.2-1.8.3+274990f.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:57] [main/WARN]: The coremod li.cil.oc.common.launch.TransformerLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: The coremod TransformerLoader (li.cil.oc.common.launch.TransformerLoader) is not signed! [09:49:57] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in OpenModsLib-1.12.2-0.12.2.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:57] [main/WARN]: The coremod openmods.core.OpenModsCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in Quark-r1.6-179.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:57] [main/WARN]: The coremod Quark Plugin (vazkii.quark.base.asm.LoadingPlugin) is not signed! [09:49:57] [main/WARN]: The coremod com.therandomlabs.randompatches.core.RPCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in RandomThings-MC1.12.2-4.2.7.4.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:57] [main/WARN]: The coremod lumien.randomthings.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: Found FMLCorePluginContainsFMLMod marker in ResourceLoader-MC1.12.1-1.5.3.jar. This is not recommended, @Mods should be in a separate jar from the coremod. [09:49:57] [main/WARN]: The coremod lumien.resourceloader.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: The coremod io.dogboy.serializationisbad.legacyforge.SerializationIsBadCoreMod does not have a MCVersion annotation, it may cause issues with this version of Minecraft [09:49:57] [main/WARN]: The coremod serializationisbad (io.dogboy.serializationisbad.legacyforge.SerializationIsBadCoreMod) is not signed! [09:49:57] [main/INFO]: Initializing SerializationIsBad, implementation type: legacyforge [09:49:57] [main/ERROR]: Failed to load remote config file javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) ~[?:1.8.0_51] at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949) ~[?:1.8.0_51] at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302) ~[?:1.8.0_51] at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296) ~[?:1.8.0_51] at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1497) ~[?:1.8.0_51] at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:212) ~[?:1.8.0_51] at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979) ~[?:1.8.0_51] at sun.security.ssl.Handshaker.process_record(Handshaker.java:914) ~[?:1.8.0_51] at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062) ~[?:1.8.0_51] at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375) ~[?:1.8.0_51] at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403) ~[?:1.8.0_51] at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387) ~[?:1.8.0_51] at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:563) ~[?:1.8.0_51] at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185) ~[?:1.8.0_51] at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1512) ~[?:1.8.0_51] at sun.net.www.protocol.http.HttpURLConnection.access$200(HttpURLConnection.java:90) ~[?:1.8.0_51] at sun.net.www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1432) ~[?:1.8.0_51] at sun.net.www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1430) ~[?:1.8.0_51] at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_51] at java.security.AccessController.doPrivileged(AccessController.java:713) ~[?:1.8.0_51] at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1429) ~[?:1.8.0_51] at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) ~[?:1.8.0_51] at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338) ~[?:1.8.0_51] at io.dogboy.serializationisbad.core.SerializationIsBad.readRemoteConfig(SerializationIsBad.java:121) [serializationisbad-1.4.jar:1.4] at io.dogboy.serializationisbad.core.SerializationIsBad.readConfig(SerializationIsBad.java:101) [serializationisbad-1.4.jar:1.4] at io.dogboy.serializationisbad.core.SerializationIsBad.<init>(SerializationIsBad.java:61) [serializationisbad-1.4.jar:1.4] at io.dogboy.serializationisbad.core.SerializationIsBad.init(SerializationIsBad.java:43) [serializationisbad-1.4.jar:1.4] at io.dogboy.serializationisbad.legacyforge.SerializationIsBadCoreMod.<init>(SerializationIsBadCoreMod.java:19) [serializationisbad-1.4.jar:1.4] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_51] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) [?:1.8.0_51] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [?:1.8.0_51] at java.lang.reflect.Constructor.newInstance(Constructor.java:422) [?:1.8.0_51] at java.lang.Class.newInstance(Class.java:442) [?:1.8.0_51] at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:594) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:451) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:265) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:107) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:81) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:42) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:141) [forge-1.12.2-14.23.5.2860.jar:?] at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?] Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387) ~[?:1.8.0_51] at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292) ~[?:1.8.0_51] at sun.security.validator.Validator.validate(Validator.java:260) ~[?:1.8.0_51] at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324) ~[?:1.8.0_51] at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229) ~[?:1.8.0_51] at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124) ~[?:1.8.0_51] at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1479) ~[?:1.8.0_51] ... 37 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:145) ~[?:1.8.0_51] at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:131) ~[?:1.8.0_51] at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280) ~[?:1.8.0_51] at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382) ~[?:1.8.0_51] at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292) ~[?:1.8.0_51] at sun.security.validator.Validator.validate(Validator.java:260) ~[?:1.8.0_51] at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324) ~[?:1.8.0_51] at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229) ~[?:1.8.0_51] at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124) ~[?:1.8.0_51] at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1479) ~[?:1.8.0_51] ... 37 more [09:49:57] [main/INFO]: Using local config file as a fallback [09:49:57] [main/ERROR]: Unable to launch java.lang.RuntimeException: An error occurred trying to configure the Minecraft home at C:\Users\diego\curseforge\minecraft\Instances\Enigmatica 2 Expert - E2E for Forge Mod Loader at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:111) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:81) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:42) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:141) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?] Caused by: java.lang.RuntimeException: You are currently using SerializationIsBad without any patch modules configured. The mod on its own doesn't do anything so please install a config file patching the vulnerabilities at io.dogboy.serializationisbad.core.SerializationIsBad.<init>(SerializationIsBad.java:63) ~[serializationisbad-1.4.jar:1.4] at io.dogboy.serializationisbad.core.SerializationIsBad.init(SerializationIsBad.java:43) ~[serializationisbad-1.4.jar:1.4] at io.dogboy.serializationisbad.legacyforge.SerializationIsBadCoreMod.<init>(SerializationIsBadCoreMod.java:19) ~[serializationisbad-1.4.jar:1.4] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_51] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_51] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_51] at java.lang.reflect.Constructor.newInstance(Constructor.java:422) ~[?:1.8.0_51] at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_51] at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:594) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:451) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:265) ~[forge-1.12.2-14.23.5.2860.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:107) ~[forge-1.12.2-14.23.5.2860.jar:?] ... 5 more [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:49) [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.SecurityManager.checkExit(SecurityManager.java:761) [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.Runtime.exit(Runtime.java:107) [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.System.exit(System.java:971) [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:138) [09:49:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Thanks for the help, I was hoping it was something I could fix on my end, but after a bit more testing it seems the mod won’t run in a server at all 🥲 just have to hope it gets fixed

Awesome!

thenk you

Remove modernfix

Remove DamageIndicatorsMod from the server - you can keep it in your client This mod is a client-side-only mod

I update the supplementaries mod and the problem fixed, thank you for your help.

That worked thank you

Yeah, the proccessor. I did it and it worked. Thanks a lot!

Does it work without Embeddium?

In more recent versions of the API, your code may look look this: String message = "You picked up this item!"; ITextComponent msg = new StringTextComponent(message); PlayerEntity player = Minecraft.getInstance().player; player.sendMessage(msg, player.getUUID()); It kinda seems a little worse to me to have to put in the UUID like that even you you have access to the player, but I'm sure they had a good reason to change it up.

I am glad you solved the issue by yourself. You may want to share your solution, so other people seeing this post in the future may find it helpful