2022-06-04T14:34:51 689.835 EXC Index was outside the bounds of the array.

[huannan5300]

1. 2022-06-04T14:34:51 689.831 ERR GetBlock failed: _y = 257, len = 64 (chunk 227/177)
2. 2022-06-04T14:34:51 689.831 ERR Exception in thread GenerateChunks:
3. 2022-06-04T14:34:51 689.835 EXC Index was outside the bounds of the array.
4. at Chunk.GetBlock (System.Int32 _x, System.Int32 _y, System.Int32 _z) [0x000d2] in <4da54c03fd4c484bb064ddea3d125f0a>:0
5. at WorldDecoratorBlocksFromBiome.decoratePrefabs (World _world, Chunk _chunk, Chunk cX1Z0, Chunk cX0Z1, Chunk cX1Z1, GameRandom _random) [0x001a2] in <4da54c03fd4c484bb064ddea3d125f0a>:0
6. at WorldDecoratorBlocksFromBiome.DecorateChunkOverlapping (World _world, Chunk _chunk, Chunk cX1Z0, Chunk cX0Z1, Chunk cX1Z1, System.Int32 seed) [0x001d7] in <4da54c03fd4c484bb064ddea3d125f0a>:0
7. at ChunkProviderGenerateWorld.decorate (Chunk _chunk) [0x0009c] in <4da54c03fd4c484bb064ddea3d125f0a>:0
8. at ChunkProviderGenerateWorld.tryToDecorate (Chunk _chunk) [0x00018] in <4da54c03fd4c484bb064ddea3d125f0a>:0
9. at ChunkProviderGenerateWorld.updateDecorationsWherePossible (Chunk chunk) [0x00027] in <4da54c03fd4c484bb064ddea3d125f0a>:0
10. at ChunkProviderGenerateWorld.GenerateSingleChunk (ChunkCluster cc, System.Int64 key, System.Boolean _forceRebuild) [0x0014f] in <4da54c03fd4c484bb064ddea3d125f0a>:0
11. at ChunkProviderGenerateWorld.GenerateChunksThread (ThreadManager+ThreadInfo _threadInfo) [0x0004c] in <4da54c03fd4c484bb064ddea3d125f0a>:0
12. at ThreadManager.myThreadInvoke (System.Object _threadInfo) [0x0005d] in <4da54c03fd4c484bb064ddea3d125f0a>:0
13. UnityEngine.StackTraceUtility:ExtractStringFromException(Object)
14. Log:Exception(Exception)
15. ThreadManager:myThreadInvoke(Object)
16. System.Threading.ThreadHelper:ThreadStart_Context(Object)
17. System.Threading.ExecutionContext:RunInternal(ExecutionContext, ContextCallback, Object, Boolean)
18. System.Threading.ExecutionContext:Run(ExecutionContext, ContextCallback, Object, Boolean)
19. System.Threading.ExecutionContext:Run(ExecutionContext, ContextCallback, Object)
20. System.Threading.ThreadHelper:ThreadStart(Object)

https://pastebin.com/dsXGuRgA

 

[Beelzybub]

You have mods that are failing and mods from previous alphas. I'd start by removing those mods and try again.