minecraft server crash

[drahGZ]

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Don't do that.

Time: 27.04.2023 22:32
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/resources/model/ModelRotation
    at Reflector.<clinit>(Reflector.java:75)
    at net.minecraft.world.gen.structure.MapGenStructure.func_143027_a(MapGenStructure.java:256)
    at net.minecraft.world.gen.structure.MapGenStructure.func_180701_a(MapGenStructure.java:43)
    at net.minecraft.world.gen.MapGenBase.func_175792_a(SourceFile:28)
    at net.minecraft.world.gen.ChunkProviderGenerate.func_180514_a(ChunkProviderGenerate.java:570)
    at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:49)
    at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:12)
    at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344)
    at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302)
    at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12)
    at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:117)
    at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:92)
    at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:302)
    at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:272)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:259)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.resources.model.ModelRotation
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 17 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@30c8681 from coremod FMLCorePlugin
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:234)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
    ... 19 more
Caused by: java.lang.RuntimeException: Attempted to load class cxf for invalid side SERVER
    at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:49)
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:230)
    ... 21 more

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

-- System Details --
Details:
    Minecraft Version: 1.8
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_371, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 11360319504 bytes (10834 MB) / 12348030976 bytes (11776 MB) up to 12348030976 bytes (11776 MB)
    JVM Flags: 2 total; -Xms12G -Xmx12G
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP v9.10 FML v8.0.99.99 Minecraft Forge 11.14.4.1577 6 mods loaded, 6 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UCHIJAA    mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) 
    UCHIJAA    FML{8.0.99.99} [Forge Mod Loader] (forge-1.8-11.14.4.1577-universal.jar) 
    UCHIJAA    Forge{11.14.4.1577} [Minecraft Forge] (forge-1.8-11.14.4.1577-universal.jar) 
    UCHIJAA    lootplusplus{1.7.1_for_1.8} [Loot++] (Loot++-1.7.1_for_1.8.jar) 
    UCHIJAA    lucky{7.0.1} [Lucky Block] (LuckyBlock_1-8_v7-0-1.zip) 
    UCHIJAA    potioncore{1.3_for_1.8} [Potion Core] (PotionCore-1.3_for_1.8.jar) 
    Loaded coremods (and transformers): 
    Profiler Position: N/A (disabled)
    Player Count: 0 / 20; []
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

[Hipposgrumm]

1.8.x is no longer supported here. We only support 1.18.x and 1.19.x.

[drahGZ]

I just saw the above information.sorry

Edited April 27, 2023 by drahGZ