java.lang.IndexOutOfBoundsException: Index: 1, Size: 2
[12:20:34] [world - HopperThread/WARN]: at java.util.ArrayList.rangeCheck(Unknown Source)
[12:20:34] [world - HopperThread/WARN]: at java.util.ArrayList.get(Unknown Source)
[12:20:34] [world - HopperThread/WARN]: at net.minecraft.world.World.func_189508_F(World.java:2777)
[12:20:34] [world - HopperThread/WARN]: at net.minecraft.world.World.func_175625_s(World.java:2755)
[12:20:34] [world - HopperThread/WARN]: at net.minecraft.world.WorldServer.func_175625_s(WorldServer.java:252)
[12:20:34] [world - HopperThread/WARN]: at net.minecraftforge.items.VanillaInventoryCodeHooks.getItemHandler(VanillaInventoryCodeHooks.java:311)
[12:20:34] [world - HopperThread/WARN]: at net.minecraftforge.items.VanillaInventoryCodeHooks.getItemHandler(VanillaInventoryCodeHooks.java:269)
[12:20:34] [world - HopperThread/WARN]: at net.minecraftforge.items.VanillaInventoryCodeHooks.extractHook(VanillaInventoryCodeHooks.java:57)
[12:20:34] [world - HopperThread/WARN]: at net.minecraft.tileentity.TileEntityHopper.func_145891_a(TileEntityHopper.java:355)
[12:20:34] [world - HopperThread/WARN]: at net.minecraft.tileentity.TileEntityHopper.func_145887_i(TileEntityHopper.java:196)
[12:20:34] [world - HopperThread/WARN]: at catserver.server.threads.HopperThread.run(HopperThread.java:42)
[12:20:34] [world - HopperThread/WARN]: at java.lang.Thread.run(Unknown Source)
删除下bukkit.yml试试?
备份
备份
不要用 CatServer 多线程版本 
GiNYAi 发表于 2020-3-17 12:29
不要用 CatServer 多线程版本
换成普通版能解决是吗
可以用这个屏蔽报错插件来屏蔽掉后台一直刷的错误报告 防止一个log文件好几百MB或者是上G