[21:49:54] [Server thread/ERROR]: Could not pass event InventoryClickEvent to CS-CoreLib vv1.5.18
org.bukkit.event.EventException
        at org.bukkit.plugin.EventExecutor$1.execute(EventExecutor.java:46) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1898) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_171]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_171]
        at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:839) [PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:403) [PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:763) [PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:661) [PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_171]
Caused by: java.lang.NullPointerException
        at me.mrCookieSlime.Slimefun.SlimefunGuide.getCraftBookRecipe(SlimefunGuide.java:1408) ~[?:?]
        at me.mrCookieSlime.Slimefun.SlimefunGuide.displayItem(SlimefunGuide.java:1007) ~[?:?]
        at me.mrCookieSlime.Slimefun.SlimefunGuide$47.onClick(SlimefunGuide.java:1138) ~[?:?]
        at me.mrCookieSlime.CSCoreLibPlugin.events.Listeners.MenuClickListener.onClick(MenuClickListener.java:36) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor397.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$1.execute(EventExecutor.java:44) ~[PaperSpigot-1.11.2-b1104.jar:git-Paper-1104]
        ... 16 more

Slimefun有问题 可能是汉化引起的 你换个slimefun版本看看

发现报错如何发生了...竟然是craftbook插件冲突

这是报错的产生过程https://www.bilibili.com/video/av24386929