[21:51:53 INFO]: xXSt3ginaXx issued server command: /joinchat behörde
[21:51:53 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'joinchat' in plugin SimpleChatRooms v1.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[paper.jar:git-Paper-442]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[paper.jar:git-Paper-442]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:732) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.PlayerConnection.handleCommand(PlayerConnection.java:1766) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1570) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:12) ~[paper.jar:git-Paper-442]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_181]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_181]
        at net.minecraft.server.v1_13_R2.SystemUtils.a(SystemUtils.java:109) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:1016) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:439) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:943) ~[paper.jar:git-Paper-442]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:841) ~[paper.jar:git-Paper-442]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: java.lang.NullPointerException
        at de.abfelbaum.localchat.ChatChangeCommands.onCommand(ChatChangeCommands.java:65) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[paper.jar:git-Paper-442]
        ... 15 more