https://paste.ubuntu.com/p/tyT3fMBKt3/
请看21:43 左右的报错 怎么解决

[spoiler]---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 19-7-31 下午9:22
Description: Exception in server tick loop

java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(Unknown Source)
        at java.util.HashMap$ValueIterator.next(Unknown Source)
        at net.minecraft.world.gen.structure.MapGenStructure.func_75051_a(MapGenStructure.java:89)
        at net.minecraft.world.gen.ChunkProviderGenerate.func_73153_a(ChunkProviderGenerate.java:382)
        at org.bukkit.craftbukkit.v1_7_R4.generator.NormalChunkGenerator.func_73153_a(NormalChunkGenerator.java:57)
        at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:417)
        at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1183)
        at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:77)
        at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:15)
        at net.minecraftforge.common.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:189)
        at net.minecraftforge.common.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:354)
        at net.minecraftforge.common.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:882)
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:459)
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:806)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:665)
        at java.lang.Thread.run(Unknown Source)


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

本帖最后由 吕易天 于 2019-8-1 13:44 编辑

可能是通用机械 (Mekanism) Mod导致的问题，导致这个崩溃的原因是在遍历HashMap的同时修改了HashMap导致的

有什么解决办法吗

备份一个服务器副本，把Mekanism Mod删了再看看还有没有这个问题