服务器后台一直重复发这个，游戏可以正常玩没影响

[19:30:55] [Server thread/ERROR]: Could not pass event BlockPlaceEvent to Matrix v4.7.3
org.bukkit.event.EventException: null
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:69) ~[EventExecutor$2.class:git-CatServer-1.12.2-3440193]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[RegisteredListener.class:git-CatServer-1.12.2-3440193]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:503) [SimplePluginManager.class:git-CatServer-1.12.2-3440193]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:488) [SimplePluginManager.class:git-CatServer-1.12.2-3440193]
        at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:189) [CraftEventFactory.class:git-CatServer-1.12.2-3440193]
        at net.minecraftforge.event.world.BlockEvent$PlaceEvent.<init>(BlockEvent.java:226) [BlockEvent$PlaceEvent.class:git-CatServer-1.12.2-3440193]
        at net.minecraftforge.event.ForgeEventFactory.onPlayerBlockPlace(ForgeEventFactory.java:153) [ForgeEventFactory.class:git-CatServer-1.12.2-3440193]
        at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:954) [ForgeHooks.class:git-CatServer-1.12.2-3440193]
        at net.minecraft.item.ItemStack.func_179546_a(ItemStack.java:213) [aip.class:?]
        at net.minecraft.server.management.PlayerInteractionManager.func_187251_a(PlayerInteractionManager.java:598) [or.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_184337_a(NetHandlerPlayServer.java:1128) [pa.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:55) [ma.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:11) [ma.class:?]
        at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [hv$1.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_181]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_181]
        at net.minecraft.util.Util.func_181617_a(Util.java:50) [h.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:845) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:782) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:636) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]
Caused by: java.lang.NullPointerException
        at me.rerere.matrix.iiiiIiIiii.IiiiIiiiIi(Unknown Source) ~[?:?]
        at me.rerere.matrix.iiiiIiiiIi.IiiiIiiiIi(Unknown Source) ~[?:?]
        at catserver.server.executor.asm.generated.GeneratedEventExecutor149.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:67) ~[EventExecutor$2.class:git-CatServer-1.12.2-3440193]
        ... 21 more

更新一下Matrix？

已经是新版了，之前旧版也是刷这个

反馈给作者或者无视吧

或者...
[管理|安全]Console Spam Fix--隐藏控制台的报错信息吧！[1.7-1.13]
https://www.mcbbs.net/thread-813418-1-1.html
(出处: Minecraft(我的世界)中文论坛)

Matrix插件问题，可以关闭部分检测以缓解，但还是建议反馈给作者

这个我有再用，无法屏蔽

Matrix 如果不是版本问题，就是核心不兼容

用的CatServer端

更新下核心版本

已经是最新的了

更新一下Matrix，如果还不能解决就是插件不完善，不过只要玩家没有异常都无所谓

换个版本的Matrix
插件并不是越新越好
适合自己版本的才行
这边建议你试试换到上一个版本)

换个核心试试

换过了，不行

换了好几个版本了，都不行

老版本也不行吗？
那要不换个核心(

试试mohist核心，比cat好，而且优化多

有链接吗

试了，一样会报错