commands dont work

Spoiler: plugin.yml

name: Parkour
main: Parkour\Main
version: 3.0
api: [1.0.0]
author: Driesboy
commands:
parkour:
permission: parkour
clearparkour:
description: clear checkpoints
permission: parkour.clear
toparkour:
description: go to checkpoint
permission: parkour.tocheckpoint
permissions:
parkour.clear:
description: clear checkpoints
default: default
parkour.tocheckpoint:
description: clear checkpoints
default: default

Spoiler: Main.php

Code:

<?php
/*
  _____       _           _               
|  __ \     (_)         | |              
| |  | |_ __ _  ___  ___| |__   ___  _   _
| |  | | '__| |/ _ \/ __| '_ \ / _ \| | | |
| |__| | |  | |  __/\__ \ |_) | (_) | |_| |
|_____/|_|  |_|\___||___/_.__/ \___/ \__, |
                                       __/ |
                                      |___/
*/
namespace Parkour;
use pocketmine\plugin\PluginBase;
use pocketmine\Server;
use pocketmine\command\ConsoleCommandSender;
use pocketmine\event\Listener;
use pocketmine\utils\Config;
use pocketmine\event\player\PlayerInteractEvent;
use pocketmine\utils\TextFormat;
use pocketmine\Player;
use pocketmine\tile\Sign;
use pocketmine\level\Position;
use pocketmine\level\Level;
use pocketmine\entity\Entity;
use pocketmine\math\Vector3;
use pocketmine\event\player\PlayerMoveEvent;
class Main extends PluginBase{
  
    private $config;
    private $pos;
    public function onEnable(){
        $this->getServer()->getLogger()->info(TextFormat::BLUE . "Parkour Has Been Enabled.");
        $this->getServer()->getLogger()->info(TextFormat::BLUE . "By: Driesboy. http://github.com/Driesboy");
        $this->getServer()->getPluginManager()->registerEvents($this, $this);
        @mkdir($this->getDataFolder());
            $this->saveDefaultConfig();
        $this->data = new Config($this->getDataFolder()."Data.yml", Config::YAML, array());
    }
  
    public function onDisable(){
        $this->getServer()->getLogger()->info(TextFormat::GRAY . ">" . TextFormat::RED . "RED" . "Parkour was disabled.");
    }
  
    public function onPlayerTouch(PlayerInteractEvent $event){
        $player = $event->getPlayer();
        $b = $event->getBlock();
        $name = $event->getPlayer()->getName();
        $name = strtolower($name);
        if($b->getID() == 63 || $b->getID() == 68){
            $sign = $player->getLevel()->getTile($b);
            if(!($sign instanceof Sign)){
                return;
            }
            $sign = $sign->getText();
            if(TextFormat::clean($sign[0]) === '[Checkpoint]'){
                $this->data->set($name,array($player->x,$player->y,$player->z,$player->getLevel()->getName()));
                $this->data->save();
                $player->sendMessage("{$this->getConfig()->get("CheckpointSaved")}");
            }
            if(TextFormat::clean($sign[0]) === '[Earn Reward]'){
                $this->data->remove($name,array($player->x,$player->y,$player->z,$player->getLevel()->getName()));
                $this->data->save();
                $player->sendMessage("{$this->getConfig()->get("EarnReward")}");
                if($this->getConfig()->get("reward-command")){
                    $player->getServer()->dispatchCommand(new ConsoleCommandSender(), str_ireplace("{PLAYER}", $player->getName(), $this->getConfig()->get("reward-command")));
                    $player->teleport($player->getLevel()->getSafeSpawn());
                }
            }
        }
    }
     public function onVoidLoop(PlayerMoveEvent $event){
          if($event->getTo()->getFloorY() < 1){
                 $player = $event->getPlayer();
                 $name = $event->getPlayer()->getName();               
                 $name = strtolower($name);
                 $pos = $this->data->get($name);
                if(is_array($pos)){
                    $player->sendMessage("{$this->getConfig()->get("TeleportMessage")}");
                        $level = $this->getServer()->getLevelByName($pos[3]);
                        $player->teleport(new Position($pos[0],$pos[1],$pos[2],$level));
                    }else{ $player->sendMessage("{$this->getConfig()->get("No-Checkpoint")}");
                    $player->teleport($player->getLevel()->getSafeSpawn());
                    }
          }
     }
}

Use Main.php instead of main.php

And delete the line `private $config;`

yes

Spacesareveryimportant
replaceplugin.ymlwiththisone

Code:

name: Parkour
main: Parkour\Main
version: 3.0
api: [1.0.0]
author: Driesboy
commands:
 parkour:
  permission: parkour
 clearparkour:
  description: clear checkpoints
  permission: parkour.clear
 toparkour:
  description: go to checkpoint
  permission: parkour.tocheckpoint
permissions:
 parkour.clear:
  description: clear checkpoints
  default: default
 parkour.tocheckpoint:
  description: clear checkpoints
  default: default