SERVER CRASH: corrupted chunks (pixelmon reforged)

---- Minecraft Crash Report ----

WARNING: coremods are present:
SpongeCoremod (spongeforge-1.12.2-2838-7.3.0.jar)
Contact their authors BEFORE contacting forge

// Don’t do that.

Time: 22.1.2021 12:11
Description: Exception ticking world

java.lang.RuntimeException: java.util.zip.ZipException: unknown compression method
at net.minecraftforge.common.chunkio.ChunkIOProvider.run(ChunkIOProvider.java:74)
at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:92)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:118)
at net.minecraft.world.gen.ChunkProviderServer.func_186028_c(ChunkProviderServer.java:89)
at net.minecraft.world.gen.ChunkProviderServer.redirect$zmf000$impl$ProvideChunkForced(ChunkProviderServer.java:1643)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:135)
at net.minecraft.server.management.PlayerChunkMapEntry.redirect$bal000$forgeImpl$UpdateLoadedChunk(PlayerChunkMapEntry.java:1576)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:227)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:756)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Unknown Source)
Caused by: java.util.zip.ZipException: unknown compression method
at java.util.zip.InflaterInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at java.io.DataInputStream.readByte(Unknown Source)
at net.minecraft.nbt.CompressedStreamTools.func_152455_a(CompressedStreamTools.java:118)
at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:88)
at net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:83)
at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async(AnvilChunkLoader.java:89)
at net.minecraftforge.common.chunkio.ChunkIOProvider.run(ChunkIOProvider.java:70)
… 14 more

A detailed walkthrough of the error, its code path and all known details is as follows:

– Head –
Thread: Server thread
Stacktrace:
at net.minecraftforge.common.chunkio.ChunkIOProvider.run(ChunkIOProvider.java:74)
at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:92)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:118)
at net.minecraft.world.gen.ChunkProviderServer.func_186028_c(ChunkProviderServer.java:89)
at net.minecraft.world.gen.ChunkProviderServer.redirect$zmf000$impl$ProvideChunkForced(ChunkProviderServer.java:1643)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:135)
at net.minecraft.server.management.PlayerChunkMapEntry.redirect$bal000$forgeImpl$UpdateLoadedChunk(PlayerChunkMapEntry.java:1576)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:227)

– Affected level –
Details:
Level name: world
All players: 1 total; [EntityPlayerMP[‘Sebastrol’/34, l=‘world’, x=-1292,51, y=73,00, z=-2336,05]]
Chunk stats: ServerChunkCache: 1249 Drop: 0
Level seed: 607452082
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (-152,68,-161), Chunk: (at 8,4,15 in -10,-11; contains blocks -160,0,-176 to -145,255,-161), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 8920243 game time, 5421234 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 58962 (now: false), thunder time: 11787 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true

– Sponge PhaseTracker –
Details:
Phase Stack: [Empty stack]
Stacktrace:
at net.minecraft.server.MinecraftServer.handler$zjg000$onCrashReport(MinecraftServer.java:4687)
at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:554)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_221, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 445202152 bytes (424 MB) / 2299002880 bytes (2192 MB) up to 3817865216 bytes (3641 MB)
JVM Flags: 1 total; -Xmx4G
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP 9.42 Powered by Forge 14.23.5.2854 17 mods loaded, 17 mods active
States: ‘U’ = Unloaded ‘L’ = Loaded ‘C’ = Constructed ‘H’ = Pre-initialized ‘I’ = Initialized ‘J’ = Post-initialized ‘A’ = Available ‘D’ = Disabled ‘E’ = Errored

Mods:

| State  | ID             | Version           | Source                                   | Signature                                |
|:------ |:-------------- |:----------------- |:---------------------------------------- |:---------------------------------------- |
| LCHIJA | minecraft      | 1.12.2            | minecraft.jar                            | None                                     |
| LCHIJA | mcp            | 9.42              | minecraft.jar                            | None                                     |
| LCHIJA | FML            | 8.0.99.99         | forge-1.12.2-14.23.5.2854.jar            | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LCHIJA | forge          | 14.23.5.2854      | forge-1.12.2-14.23.5.2854.jar            | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LCHIJA | spongeapi      | 7.3-7127e0882     | spongeforge-1.12.2-2838-7.3.0.jar        | None                                     |
| LCHIJA | sponge         | 1.12.2-7.3.0      | spongeforge-1.12.2-2838-7.3.0.jar        | None                                     |
| LCHIJA | spongeforge    | 1.12.2-2838-7.3.0 | spongeforge-1.12.2-2838-7.3.0.jar        | None                                     |
| LCHIJA | simplehomes    | 1.0.3             | [1.12.2]+Simple+Homes-1.0.3.jar          | None                                     |
| LCHIJA | backups        | 1.5.6             | Backups-1.12.2-1.5.6.jar                 | None                                     |
| LCHIJA | pixelmon       | 8.1.2             | Pixelmon-1.12.2-8.1.2-universal.jar      | None                                     |
| LCHIJA | gameshark      | 6.0.4             | Gameshark-1.12.2-6.0.4-universal.jar     | None                                     |
| LCHIJA | pixelextras    | 2.5.11            | PixelExtras-1.12.2-2.5.11-universal.jar  | None                                     |
| LCHIJA | quickteleports | 1.1.1             | quickteleports-1.12.2-1.1.1.jar          | None                                     |
| LCHIJA | worldedit      | 6.1.10            | worldedit-forge-mc1.12.2-6.1.10-dist.jar | None                                     |


Plugins:

| State  | ID          | Version | Source                              | Signature |
|:------ |:----------- |:------- |:----------------------------------- |:--------- |
| LCHIJA | luckperms   | 5.2.76  | LuckPerms-Sponge-5.2.76.jar         | None      |
| LCHIJA | pixelhunt   | 1.1.3   | PixelHunt-1.1.3-MC1.12.2-S7.2.0.jar | None      |
| LCHIJA | tournaments | 2.6.2   | Tournaments-1.12.2-2.6.2.jar        | None      |

Loaded coremods (and transformers): 

SpongeCoremod (spongeforge-1.12.2-2838-7.3.0.jar)
org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
Profiler Position: N/A (disabled)
Player Count: 1 / 20; [EntityPlayerMP[‘Sebastrol’/34, l=‘world’, x=-1292,51, y=73,00, z=-2336,05]]
Is Modded: Definitely; Server brand changed to ‘fml,forge,sponge’
Type: Dedicated Server (map_server.txt)

Usually in this situation you have to restore from backup.

This type of corruption usually happens when a minecraft server get abruptly terminated while in the middle of trying to save.

You can also try just removing specific files that may be corrupt, but finding only those ones is usually difficult.

Yeah I have had to backup many times now, so I made this post to see why this would happen.

The server hasn’t really crashed so I don’t know why this corruption happened. Like I said before, this isn’t the first time.