Plugin Spawnentity

I'm creating a plugin when using the /spawnentity command a zombie appears to attack you, but it's giving an error

Error: Call to undefined method pocketmine\command\ConsoleCommandSender::getLevel()
File: plugins/Guardiões/src/Will/Plugin/Main
Line: 26
Type: Error

THIS CRASH WAS CAUSED BY A PLUGIN
BAD PLUGIN: Guardioes v1

Code:
[17] }
[18]
[19] public function onCommand(CommandSender $sender, Command $command, string $label, array $args): bool {
[20] if ($command->getName() == "spawnentity") {
[21] if (!$sender->hasPermission("spawnentity.command")) {
[22] $sender->sendMessage(TextFormat::RED . "Você não tem permissão para executar este comando.");
[23] return false;
[24] }
[25]
[26] $level = $sender->getLevel();
[27] $x = $sender->getX();
[28] $y = $sender->getY();
[29] $z = $sender->getZ();
[30] $entity = Entity::createEntity("Zombie", $level, new Vector3($x + 2, $y, $z + 2));
[31] $entity->spawnToAll();
[32]
[33] $sender->sendMessage(TextFormat::GREEN . "Entidade Zombie gerada com sucesso.");
[34] return true;
[35] }
[36]

 

I don't know much about coding/PHP myself but it seems the error is happening because you sent the command from the console and the method used on line 26 "$level = $sender->getLevel();" is not a method if sent by console. You should enclose your code with another if check to see if the sender is an instance of player because the console will never be in a world/level....