warjort

Then speak to AMD. This is the forge support forum, we don't do PC Support here. But one of the suggested fixes was to downgrade the driver to the previous (or what one person described as the "recommended") version.

Click the link I posted above. It contains suggested fixes for a problem with your graphics driver.

https://forums.minecraftforge.net/topic/117469-error-when-trying-to-run-runclient/

Or uninstall all the mods that bake their own models?

This is a known optifine issue. https://github.com/sp614x/optifine/issues/7127 You either uninstall optifine or downgrade forge to 40.1.23 43.1.23 or before until they fix it.

It just says "game instances" as the context for the update event. But it doesn't say anything more specific. If it is only forge, maybe there is something wrong with your installation configuration? You could try creating a new brand new installation for forge to see if that fixes the problem. The other possibility is that the forge installer didn't complete installing the game and you didn't notice the error, but you seem to have been using it previously? If Mojang won't support their launcher then you can always try one of the other ones, e.g. curseforge or multimc.

There is nothing in that log that mentions forge, or trying to start minecraft. Are you sure it is the full log or even the correct log? The one called launcher_log.txt From my little understanding of the launcher, it is doing a "trigger update event" which I think means it needs to download something, then the application closes for some reason 1.5 seconds later. There is no reason given except the "Main window has been closed" which it doesn't regard as an error. You probably need to speak to Mojang to understand what is happening.

Don't post snippets, post a link to the full launcher_log.txt so we have all the relevant information.

Does it show any content? That is the file that forge is trying to download when you get that connection error. Maybe you have an issue with your network? e.g. antivirus or firewall

Your question in unanswerable. Post a link to your logs/debug.log

The error says one your mods is trying to send a packet that is bigger than the maximum size allowed. Since the error is on the server, posting your client log is not much help. We need to see the server's debug.log You probably need to add the following system property to your user_jvm_args.txt so we can see the debug logging for mojang's networking errors. -Dforge.logging.mojang.level=debug These are the mods that the client says has created custom networking channels: You should check you have the latest version of these mods and there maybe a known issue in their bug reports?

You don't show your installer log file it can be found in the same folder where you put the installer jar file. But the error you do show is for trying to run Alex's mod for minecraft 1.19.1+ with minecraft 1.19 You need to install the version of the mod for 1.19

MobEffects only apply to LivingEntitys. Can't you just override shouldRender() in your EntityRenderer?

It is problem with the mods. In particular the way they define features in their biome configurations. This is an explanation of the problem. https://misode.github.io/guides/feature-order-cycle/ You can try that Cyanide mod mentioned on that link to see if it gives you more definitive information. Where the mod author you spoke to is correct is that minecraft has remembered this information in its world save. To fix it, you would probably need to modify your save file. I have never tried to do that, so I can't tell you how to do it. But the initial problem is with the mod. I am surprised the mod author won't help you fix it if it is their mod that has broken your save file? You can try asking one of the other mod developers I mentioned above to see if they are more helpful. I don't think deleting chunks would fix the problem. The issue is not directly with the chunk, but with the biome the chunk uses. It is the biome configuration you need to fix.

It is not a good idea to delete world gen mods after you create a world using that mod.

You have a conflict in your world gen configuration. The mods byg, terralith and various_world are mentioned. Check you have the latest versions of these mods then contact the mod authors.

Looks to be an issue with the "Oh the biomes you'll go" mod trying to run some "repair biome sources" process. Check you have the latest version then contact the mod author.

Known optifine issue: https://github.com/sp614x/optifine/issues/7136

The error literally says it can't find the nether. It's not clear from information you show whether it is a configuration issue or the actual nether itself that is missing. You need to post a link to your logs/debug.log so we have all the information. e.g. there might be previous errors that show what the real problem is.

java.util.concurrent.ExecutionException: com.google.gson.JsonParseException: Error loading registry data: Value must be non-negative: -758504443 at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396) ~[?:?] at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073) ~[?:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadWorldStem(WorldOpenFlows.java:131) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadWorldStem(WorldOpenFlows.java:109) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.doLoadLevel(WorldOpenFlows.java:148) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.doLoadLevel(WorldOpenFlows.java:136) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadLevel(WorldOpenFlows.java:58) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.loadWorld(WorldSelectionList.java:586) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.joinWorld(WorldSelectionList.java:448) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] -- snip -- Caused by: com.google.gson.JsonParseException: Error loading registry data: Value must be non-negative: -758504443 at net.minecraft.core.RegistryAccess.lambda$readRegistry$13(RegistryAccess.java:211) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] at net.minecraft.core.RegistryAccess.readRegistry(RegistryAccess.java:210) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.core.RegistryAccess.load(RegistryAccess.java:203) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.resources.RegistryOps.createAndLoad(RegistryOps.java:30) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.resources.RegistryOps.createAndLoad(RegistryOps.java:24) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.lambda$loadWorldStem$1(WorldOpenFlows.java:111) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.server.WorldLoader.load(WorldLoader.java:22) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.server.WorldStem.load(WorldStem.java:11) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadWorldStem(WorldOpenFlows.java:129) ~[forge-1.19.2-43.1.3_mapped_official_1.19.2-recomp.jar%23183!/:?] ... 36 more You still have that negative number I mentioned before somewhere in one of your files. Unfortunately, the error message doesn't say which file. If you can't find it, you will probably have to use to a debugger to see which file minecraft is parsing when it throws that error.

Either you posted the wrong log or you are still using java 19. If you don't want to uninstall java 19, edit the run.bat so it explicitly uses the java.exe from your java 17 installation e.g. "c:\full path\to\java17\bin\java.exe" @user_jvm_args.txt @libraries/net/minecraftforge/forge/1.18.2-40.1.14/win_args.txt Where obviously you need to use the real path and the quotation marks are important if the path includes spaces like my example.

Guessing: A likely candidate is MekanismTweaks which has a number of mixins to Mekanism classes? https://github.com/TeamFelnull/MekanismTweaks/tree/master/src/main/java/dev/felnull/mekanismtweaks/mixin

As it says and you quote in your title, it is an issue with mekanism generators. You need to contact the mod author using the "Mod Issue URL" shown in your crash report above. But, given the error message, it is likely caused by a conflict with another mod that has a failed mixin. There is nothing in the crash report that says which mod that is, and you don't post a link to the logs/debug.log so we don't have all the information.

Can you access this: https://launcher.mojang.com/v1/objects/99ade839eacf69b8bed88c91bd70ca660aee47bb/client.txt

Please always post a link to the debug.log in future so we have all the information. Just posting small snippets of errors will usually just mean your question gets ignored if it doesn't contain enough information to be answered. You have an old version of advanced generators that is not compatible with minecraft 1.19.2 https://www.curseforge.com/minecraft/mc-mods/advanced-generators/files/all?filter-game-version=1738749986%3a73407