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crashlog: https://pastebin.com/mW43VxdU (was ran through mclo.gs beforehand but realized i need to make it a pastebin, may have artifacts from mclo.gs) Context: had same crash from loading ocean chunks, just had it again from tp'ing to a Yung's Better Nether Fortress. I have BetterRandomSourceConcurrencyCrash enabled.

Try older builds of Create The latest Modern Industrialization build for 1.20.1 was released in 2024 So this mod may only compatible with Create 5

It does work but upon further testing it appears that Create and Modern Industrialization don't work together> Before it worked with just Synitra and after I added Create it crashed with the error I mentioned. It stinks because I like MI much better then GregTech

Does it work without connectormod?

I appear to be having some kind of error running my modpack. It crashes with the above error and I have no idea what it means Crashlog: https://pastebin.com/eeaTLwaP Latest: https://pastebin.com/TtK5L4Ww

Read the FAQ (orange banner at top of page) and post full logs as described there to an external site, and provide the link here.

These are the forge forums, you would need to ask wherever neoforged support is given.

Hello, i'm trying to launch a server with additional mods i've added myself, and it isn't launching - but scrolling through the debug.log i came across [main/TRACE] [net.neoforged.fml.loading.moddiscovery.locators.JarInJarDependencyLocator/]: Failed to load resource META-INF/jarjar/metadata.json from MixinSquared-0.2.0-beta.6.jar, it does not contain dependency information. which came up a lot - im just wondering if this could be why my server won't launch

Also did you quit making this?

[main/ERROR]:Failed reading REFMAP JSON from : java.lang.NullPointerException Cannot invoke "org.spongepowered.asm.mixin.refmap.ReferenceMapper.setResourceName(String)" because "mapper" is null this is the error message i keep getting when trying to launch minecraft from the launcher with my mods but i just can't figure out what this error message means. i'm new to making mod packs but i have tried making 3 separate mod packs with different mods but i still run into this issue and i am starting to think there might be a conflict between 2 different mods but again i have no idea since this is the only error message i get. any idea's?

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

i have downloaded a mod called All in One (Modded One Block) and downloaded it through essentials mod to play with my friends, it starts to load up and start loading into the game but then i get the crash report and get sent back to the launcher with the error code "The game crashed: rendering overlay Error: com.electronwill.nightconfig.core.io.WritingException: An I/O error occured".

There typically isnt a place to commission mods. Mods are made by hobbyist programmers in their spair time. You could try some general minecraft modding discords, but I dont have any to recommend.

minecraftLibrary is required for dev time for it to load. jarJar should be enough for runtime. be sure you're running the latest forge. And make sure you post your debug log.

How did u update the version, I can’t figure it out for the life of me

I want to make an anime mod for 1.20.1 forge, but don't know how to do anything. I'm trying to find people to make models, animations, stat page, leveling mechanic, and someone who can import/create sound effects/BGM.

It still doesn't work

Add the full log

FoxyWoxy In Wemmbus videos the stab shots are with tnt minecarts and not tnt. And the nuke shots are spaced out and all come from a single compressed tnt block and expand suddenly. Yours works fine but I would appreciate that change in the future. Thanks!

do you notice that it stops the internal server for the singleplayer worlds. here are some lines that you should take a look: [11Oct2025 00:02:01.774] [Render thread/INFO][rgp_client/]: Reconnected Rocket client as session has become inactive. [11Oct2025 00:02:01.810] [Server thread/INFO][net.minecraft.server.network.ServerGamePacketListenerImpl/]: ItsOutCast lost connection: Disconnected [11Oct2025 00:02:01.810] [Server thread/INFO][net.minecraft.server.MinecraftServer/]: ItsOutCast left the game [11Oct2025 00:02:01.845] [Server thread/INFO][net.minecraft.server.network.ServerCommonPacketListenerImpl/]: Stopping singleplayer server as player logged out [11Oct2025 00:02:02.085] [Server thread/INFO][net.creeperhost.ftbbackups.FTBBackups/]: Shutdown Complete [11Oct2025 00:02:02.091] [Render thread/INFO][mezz.jei.library.startup.JeiStarter/]: Stopping JEI [11Oct2025 00:02:02.092] [Render thread/INFO][mezz.jei.library.load.PluginCaller/]: Sending Runtime Unavailable... [11Oct2025 00:02:02.092] [Render thread/INFO][mezz.jei.neoforge.plugins.neoforge.NeoForgeGuiPlugin/]: Stopping JEI GUI

Here's my link to this issue. Im not sure if it had something to do with essentials but I'm going to guess yes as that was the only mod I ve added to play with friends. https://api.mclo.gs/1/raw/dokemkd

Hi, I also am having this issue. Not sure what is causing it

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I sent you a message with my username