[10:57:44 ERROR]: Could not pass event PlayerCommandPreprocessEvent to DeluxeMenus v1.4.1
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1154) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_261]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_261]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_261]
Caused by: java.lang.NullPointerException
        at com.extendedclip.papi.expansion.playerpoints.PlayerPointsExpansion.getPoints(PlayerPointsExpansion.java:69) ~[?:?]
        at com.extendedclip.papi.expansion.playerpoints.PlayerPointsExpansion.onRequest(PlayerPointsExpansion.java:61) ~[?:?]
        at me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(PlaceholderAPI.java:237) ~[?:?]
        at me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(PlaceholderAPI.java:377) ~[?:?]
        at me.clip.deluxemenus.guimenu.GUIMenuItem.getItemStack(GUIMenuItem.java:279) ~[?:?]
        at me.clip.deluxemenus.guimenu.GUIMenu.openMenu(GUIMenu.java:100) ~[?:?]
        at me.clip.deluxemenus.PlayerListener.onCommandExecute(PlayerListener.java:73) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor92.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_261]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 16 more

[11:04:40 INFO]: winh issued server command: /dm open gr [11:04:40 ERROR]: null org.bukkit.command.CommandException: Unhandled exception executing command 'dm' in plugin DeluxeMenus v1.4.1         at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-db6de12-18fbb24]         at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-db6de12-18fbb24]         at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) ~[spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-db6de12-18fbb24]         at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_261]         at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_261]         at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-db6de12-18fbb24]         at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-db6de12-18fbb24]         at java.lang.Thread.run(Unknown Source) [?:1.8.0_261] Caused by: java.lang.NullPointerException         at com.extendedclip.papi.expansion.playerpoints.PlayerPointsExpansion.getPoints(PlayerPointsExpansion.java:69) ~[?:?]         at com.extendedclip.papi.expansion.playerpoints.PlayerPointsExpansion.onRequest(PlayerPointsExpansion.java:61) ~[?:?]         at me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(PlaceholderAPI.java:237) ~[?:?]         at me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(PlaceholderAPI.java:377) ~[?:?]         at me.clip.deluxemenus.guimenu.GUIMenuItem.getItemStack(GUIMenuItem.java:279) ~[?:?]         at me.clip.deluxemenus.guimenu.GUIMenu.openMenu(GUIMenu.java:100) ~[?:?]         at me.clip.deluxemenus.DeluxeMenusCommands.onCommand(DeluxeMenusCommands.java:164) ~[?:?]         at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-db6de12-18fbb24]         ... 15 more

检查变量看看

多谢大佬，我已经找到问题原因了，插件变量出错了导致无法打开菜单