Since the 1.1 update I'm getting this error in console whenever someone joins. Code: 2017-06-04 [17:43:53] [Server thread/CRITICAL]: TypeError: "Argument 1 passed to pocketmine\Player::sendPosition() must be an instance of pocketmine\math\Vector3, null given, called in phar://E:/UserFiles/PocketMine-MP.phar/src/pocketmine/Player.php on line 2143" (EXCEPTION) in "/src/pocketmine/Player" at line 3945 What could this mean and how can I solve it? Many thanks.