Scheduler got error for new api ?

I just used some plugins that already working in old api for new server pmmp with api 3.0.0-ALPHA and now these plugin got same error :

Code:

Error: "Call to undefined method pocketmine\Server::getScheduler()" (EXCEPTION) in "PocketRPG_v0.3.0/src/PocketRPG/Main" at line 37

Code of line with error :

PHP:

public function onEnable() {
    $this->getLogger()->info(TF:: GREEN . "Enabling PocketRPG");
    $this->getServer()->getPluginManager()->registerEvents(new EventListener($this), $this);
    $this->getCommand("rpg")->setExecutor(new RpgCommands($this));
    $this->getCommand("quest")->setExecutor(new QuestCommands($this));
    $this->getCommand("party")->setExecutor(new PartyCommands($this));
   /*line 37 */ $this->getServer()->getScheduler()->scheduleRepeatingTask (new ManaTask($this), 40);
  
    @mkdir($this->getDataFolder());
    $this->saveResource("config.yml");
    $this->config = new Config($this->getDataFolder(). "config.yml", Config::YAML);
  }

Please help me how to fix@@@

 

Consequences of using unstable PMMP releases without going through the changes?
https://github.com/pmmp/PocketMine-MP/pull/2213

 

I fixed but now i have another error

Code:

Error: "Cannot call constructor" (EXCEPTION) in "PocketRPG_v0.3.0/src/PocketRPG/tasks/ManaTask" at line 16

PHP:

use PocketRPG\Main;
use pocketmine\scheduler\Task;
use pocketmine\scheduler\TaskScheduler;
use pocketmine\scheduler\TaskHandler;
use pocketmine\Player;
use pocketmine\Server;
use pocketmine\utils\Config;

class ManaTask extends Task {

  public function __construct(Main $plugin) {
  /*line16*/  parent::__construct ($plugin);
    $this->plugin = $plugin;
  }


 

Task class has no constructor, you're trying to call Task class's constructor on that line. https://github.com/pmmp/PocketMine-MP/blob/master/src/pocketmine/scheduler/Task.php

 

So how to fix the code please !!@@

 

basically, just remove the constructor (the whole line 16)