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i had to remove both the supermarijn624corelib and configlib and it works fine. i was also able to re-add the vanilla backport. im still not sure why they stopped working overnight

If I had to guess, the client side chunk is not populated at the load time. As the server has to sync the data to the client. Why not just do all of this server side?

hmm I have no idea

no, no it does get reached the problem it's that chunk.getHeight for some reason returns -64 instead of the actual highest block on that position (the line System.out.println("block: " + state.getBlock() + ", height: " + highestY);) keeps printing block: minecraft:void_air, height: -64

I am not sure but if (level.isClientSide()) { ... } here always return false (singleplayer is some kind of local server) - so this is used for client-thread stuff like changing GUIs or working with effects So this code block is completely ignored - to make sure, test it with LOGGER.info() lines or System.out.println() So if I am correct, just unwrap it from the if (level.isClientSide()) { ... } check

Also make a test without supermartijn642corelib and the mods requiring it

I removed vanilla backport and it is still crashing. https://mclo.gs/R6Xn9DE

@SubscribeEvent public void onChunkLoad(ChunkEvent.Load event) { if (!(event.getLevel() instanceof Level level) || !event.isNewChunk()) return; if (level.isClientSide()) { ChunkAccess chunk = event.getChunk(); ChunkPos pos = chunk.getPos(); Vector2i coordinatesToWorld = new Vector2i(pos.x * 16, pos.z * 16); Vector2i chunk_origin = new Vector2i( Math.floorMod(coordinatesToWorld.x, 512), Math.floorMod(coordinatesToWorld.y, 512) ); Vector2i region_coordinates = new Vector2i( pos.getRegionX(), pos.getRegionZ() ); int[] colors_data = new int[256]; for (int z = 0; z < 16; z++) { for (int x = 0; x < 16; x++) { int highestY = chunk.getHeight( Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, x, z ); BlockPos blockPos = pos.getBlockAt(x, highestY-1, z); BlockState state = level.getBlockState(blockPos); int colorsValue = getColorsValue(state); System.out.println("block: " + state.getBlock() + ", height: " + highestY); colors_data[z * 16 + x] = colorsValue; } } MinecraftServer server = ServerLifecycleHooks.getCurrentServer(); if (server != null) { ExampleMod.MOD_FOLDER.AttemptToModifyRegionArea( chunk_origin.x, chunk_origin.y, 16, 16, colors_data, new RegionRecord( level.dimension().location().toString(), server.getWorldData().getLevelName(), region_coordinates ) ); } } }

Maybe an issue with the mod vanillabackport

My friend and I have a modded server hosted through Exaroton, and the server was working fine last night. I went to get on this morning, and it is no longer working. No mods were added, updated, or removed. I went through the log and cant seem to find anything that would point to a reason as to why it no longer works. https://mclo.gs/VtcmgcU

The "Missing mods.toml file" errors are not related to crashes - add the full log or crash-report with sites like https://mclo.gs/

The 294th episode of Hunger Games on the road to 1000 episodes! Lets see if we can hit that goal! https://www.youtube.com/watch?v=fBaCGA5MWEk

the same thing is happening to me on both curseforge and modrinth, does anyone know what else could be causing it?

The 293rd episode of Hunger Games on the road to 1000 episodes! Lets see if we can hit that goal! https://www.youtube.com/watch?v=fKOpfhlee0U

The 292nd episode of Hunger Games on the road to 1000 episodes! Lets see if we can hit that goal! https://www.youtube.com/watch?v=BHvRQ15AGs8

Please read the FAQ (https://forums.minecraftforge.net/topic/125488-rules-and-frequently-asked-questions-faq/) and post the complete logs to an external site, linking to them here. The incomplete log you posted does not have any errors in it.

I keep working on this its a existing modpack I added a few mods it either asking for mods I cant use or now its this one. Here is the log hope you guys can help me: [16Oct2026 21:56:19.198] [main/INFO][net.minecraftforge.fml.loading.ImmediateWindowHandler/]: Loading ImmediateWindowProvider fmlearlywindow [16Oct2026 21:56:19.345] [main/INFO][EARLYDISPLAY/]: Trying GL version 4.6 [16Oct2026 21:56:20.202] [main/INFO][EARLYDISPLAY/]: Requested GL version 4.6 got version 4.6 [16Oct2026 21:56:20.255] [main/INFO][mixin-transmog/]: Mixin Transmogrifier is definitely up to no good... [16Oct2026 21:56:20.288] [main/INFO][mixin-transmog/]: crimes against java were committed [16Oct2026 21:56:20.316] [main/INFO][mixin-transmog/]: Original mixin transformation service successfully crobbed by mixin-transmogrifier! [16Oct2026 21:56:20.381] [main/INFO][mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/C:/Users/FrankRock22_2/curseforge/minecraft/Instances/Magic&Mystery%20-%20The%20cozy%20Magicians/mods/Connector-1.0.0-beta.49+1.20.1.jar%23500%23503!/ Service=ModLauncher Env=CLIENT [16Oct2026 21:56:20.396] [pool-2-thread-1/INFO][EARLYDISPLAY/]: GL info: NVIDIA GeForce GTX 1650/PCIe/SSE2 GL version 4.6.0 NVIDIA 581.15, NVIDIA Corporation [16Oct2026 21:56:22.418] [main/WARN][net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\FrankRock22_2\curseforge\minecraft\Install\libraries\net\minecraftforge\fmlcore\1.20.1-47.4.16\fmlcore-1.20.1-47.4.16.jar is missing mods.toml file [16Oct2026 21:56:22.426] [main/WARN][net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\FrankRock22_2\curseforge\minecraft\Install\libraries\net\minecraftforge\javafmllanguage\1.20.1-47.4.16\javafmllanguage-1.20.1-47.4.16.jar is missing mods.toml file [16Oct2026 21:56:22.431] [main/WARN][net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\FrankRock22_2\curseforge\minecraft\Install\libraries\net\minecraftforge\lowcodelanguage\1.20.1-47.4.16\lowcodelanguage-1.20.1-47.4.16.jar is missing mods.toml file [16Oct2026 21:56:22.437] [main/WARN][net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\FrankRock22_2\curseforge\minecraft\Install\libraries\net\minecraftforge\mclanguage\1.20.1-47.4.16\mclanguage-1.20.1-47.4.16.jar is missing mods.toml file [16Oct2026 21:56:24.467] [main/WARN][net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: geckolib. Using Mod File: C:\Users\FrankRock22_2\curseforge\minecraft\Instances\Magic&Mystery - The cozy Magicians\mods\geckolib-forge-1.20.1-4.8.4.jar [16Oct2026 21:56:24.467] [main/WARN][net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: cloth_config. Using Mod File: C:\Users\FrankRock22_2\curseforge\minecraft\Instances\Magic&Mystery - The cozy Magicians\mods\cloth-config-11.1.136-forge.jar [16Oct2026 21:56:24.467] [main/WARN][net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: fabric_api. Using Mod File: C:\Users\FrankRock22_2\curseforge\minecraft\Instances\Magic&Mystery - The cozy Magicians\mods\fabric-api-0.92.6+1.11.15+1.20.1.jar [16Oct2026 21:56:24.467] [main/WARN][net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: architectury. Using Mod File: C:\Users\FrankRock22_2\curseforge\minecraft\Instances\Magic&Mystery - The cozy Magicians\mods\architectury-9.2.14-forge.jar [16Oct2026 21:56:24.467] [main/WARN][net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: mezz_config. Using Mod File: C:\Users\FrankRock22_2\curseforge\minecraft\Instances\Magic&Mystery - The cozy Magicians\mods\mezz_config-1.20.1-forge-0.6.8.jar [16Oct2026 21:56:24.468] [main/INFO][net.minecraftforge.fml.loading.moddiscovery.JarInJarDependencyLocator/]: Found 96 dependencies adding them to mods collection [16Oct2026 21:56:29.127] [main/INFO][org.sinytra.connector.locator.DependencyResolver/]: Dependency resolution found 1 candidates to load [16Oct2026 21:56:33.862] [main/INFO][org.sinytra.connector.service.hacks.ModuleLayerMigrator/]: Successfully made module authlib transformable

The 291st episode of Hunger Games on the road to 1000 episodes! Lets see if we can hit that goal! https://www.youtube.com/watch?v=tsYQUzdw1_g

Hey. Please let me know if you found a fix. I’m also in 1.20.1 I have a lot of the mods you mentioned. I have no lag at ALL. FPS is great. But the chunks are not loading in fast enough. Makes exploration not as fun.

The 290th episode of Hunger Games on the road to 1000 episodes! Lets see if we can hit that goal! https://www.youtube.com/watch?v=0RqBLsD8CXg

thank jou

graphics and fun

A lot of hosts running halloween promos currently. Defo worth having a look around

The 289th episode of Hunger Games on the road to 1000 episodes! Lets see if we can hit that goal! https://www.youtube.com/watch?v=6N6lJhGKiv8

IT WORKED TY