Solved Server crashed because onCommand

Hey again, I just finished a new plugin and i wanted to test it but the server just crashed. I get this error:
Error: Declaration of ForeverCMD\main:nCommand(pocketmine\command\Command $cmd, pocketmine\command\CommandSender $sender, array $args, string $label): bool must be compatible with pocketmine\plugin\PluginBase:nCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $command, string $label, array $args): bool
I just don't know what it means because I think mine and the "Compatible" are the same.

 

I solved it, strangely you had to put the uses in the right order...
Now i have another error that says: pocketmine\plugin\PluginManager::registerEvent(): Argument #1 ($event) must be of type string, ForeverCMD\main given, called in C:\Users\arese\Desktop\PocketMine-MP-stable\plugins\forevercmd\src\forevercmd\main.php on line 24
Does anyone know what i'm doing wrong? I didn't code since PM3.20

 

Heres the Code by the way

Code:

public function onEnable(): void
    {
        $this->getLogger()->info("ForeverCMD is activated!");
        $this->getServer()->getPluginManager()->registerEvent($this, $this);
        @mkdir($this->getDataFolder());
        $this->saveDefaultConfig();
        $this->getResource("config.yml");
    }

 

Solved!

 

public function onCommand(CommandSender $sender, Command $command, string $label, array $args): bool
{

//your cmd

return true;
}

 

Not onCommand is my problem, my problem is onEnable!