An internal error occurred while attempting to perform this command

[MittelEgo]

Hey,

ich habe erst angefangen programmieren zu lernen und habe mich entschieden mit Minecraftplugins anzufangen. Ich habe jetzt ein paar Commands,doch wenn ich versuche diese auszuführen,kommt die Meldung: "An internal error occurred while attempting to perform this command". In der Konsole kommt diese Meldung:

[14:23:10 INFO]: MittelEgo issued server command: /countdown
[14:23:10 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'countdown' in plugin Beginner v1.0
        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_201]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_201]
        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_201]
Caused by: java.lang.IllegalArgumentException: Null class cannot have a plugin
        at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPlugin.getPlugin(JavaPlugin.java:521) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at de.mittelego.lernen.commands.CountdownCommand.onCommand(CountdownCommand.java:22) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 15 more

 

Ich würde mich über jede Hilfe freuen! Ich bin wie gesagt,ein Anfänger und bitte daher etwas geduldig mit mir umzugehen

[Xenox003]

Hallo, bin zwar auch neu versuche aber trozdem dir zu helfen. Wenn du eventuell mal den quellcode des commands reinschickst könnte ich dir vielleich weiterhelfen