onCommand error declaration

Hi everyone. I keep getting an error when I try creating a command.

Code:

Fatal error: Declaration of Plug\Main\controller::onCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $cmd, string $Commandlabel, array $args) must be compatible with pocketmine\plugin\PluginBase::onCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $command, string $label, array $args): bool in C:\Users\Home\Desktop\mc\plugins\src\Plug\Main\controller.php on line 29

My plugin.yml code is this:

Code:

name: controller
main: Plug\Main\controller
version: 1.0.0
api: [3.5.7]
commands:
    tele:
        description: "description"
        usage: "/tele"
        permission: test.my

My main file is this:

Code:

<?php

namespace Plug\Main;

use pocketmine\plugin\PluginBase;
use pocketmine\event\Listener;
use pocketmine\command\Command;
use pocketmine\command\CommandSender;
class controller extends PluginBase{
    public function onEnable(){
        foreach(Server::getInstance()->getOnlinePlayers() as $player){
            $this->playerList[$player->getName()] = $this->getPlayerData($player);
        }
        $this->getLogger()->info("AIO has been enabled");
    }
   
    public function onDisable(){
        $this->getLogger()->info("AIO has been disabled");
    }
   
    public function onCommand(CommandSender $sender, Command $cmd, string $Commandlabel, array $args){
        if(strtolower($cmd->getName()) === "tele"){
           
            return TRUE;
        }
        return FALSE;
    }
}

What is annoying me is that when I first created this code it worked. I went back to it 3 minutes after and got this error.

 

Code:

Fatal error: Declaration of Plug\Main\controller::onCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $cmd, string $Commandlabel, array $args) must be compatible with pocketmine\plugin\PluginBase::onCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $command, string $label, array $args): bool in C:\Users\Home\Desktop\mc\plugins\src\Plug\Main\controller.php on line 29

Do you see the difference between your function signature and the interface's signature?

Your declaration:

Code:

onCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $cmd, string $Commandlabel, array $args)

The interface:

Code:

onCommand(pocketmine\command\CommandSender $sender, pocketmine\command\Command $command, string $label, array $args): bool

Aside from the variable names (they don't matter as long as the types are the same,) the only difference is in the return value type. While you had the right idea returning either true or false in the onCommand function, returning it is not enough. You also have to add the type to your method signature to fulfill the interface.

When you run into these kinds of problems, it's helpful to look closely at the error and pick apart exactly what it's telling you It's definitely an acquired skill, but with practice and attention, you will get it.

 

Thanks for the help. I really should take more notice.