Minecraft Command works in Console but not in a CommandBlock

Question

So I've programmed a Plugin for Minecraft. Now I've tested the command in the console, it works totaly fine. But when I run the copy pasted command in a CommandBlock, nothing happends and the CommandBlock says: "Unexpected Error occurred trying to execute that command". Is there a way to get more Information about that error or to fix that?

CommandBlock output and input:

Command by using the console

Answer 1

It could be that the plugin prevents the execution from server console.

If this is true it will not work in a command block either.

Perhaps you can work around this by using the sudo command of the EssentialsX plugin.

/sudo @p syncaudio <args>

This executes the command as the closest player to the command block