Command not work

Hello guys, I use this mehod to create command but it's doesn't work.
How fix it?

package BukkitTest.Cl;

import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.event.Listener;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class Classe1 extends JavaPlugin implements Listener {

public void onEnable() {
PluginManager pm = getServer().getPluginManager();
pm.registerEvents(this, this);
}


public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
if(cmd.getName().equalsIgnoreCase("test")) {
sender.sendMessage("Command work");
}
return false;
}
}

 

Look in console for startup errors

 

I don't have error in console but I have : Unknow command Type "Help" for Help
The command work correctly with the PlayerCommandPreprocessEvent but I need a method to can use the command in the console

 

after sender.sendmessage("command work");
return true;

 

@0verFull Your plugin.yml file is incorrect. Follow the tutorial on the wiki.

 

don't Work @DaanSander

Thank you @Skionz , I forgot to save the command in plugin.yml.

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