Undefined property: pocketmine\entity\Zombie::$motion

Hello! Help me please

Code:

[15:25:14] [Server thread/CRITICAL]: ErrorException: "Undefined property: pocketmine\entity\Zombie::$motionX" (EXCEPTION) in "src/pocketmine/entity/Entity" at line 2207
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My code:

 

$motionX, $motionY and $motionZ were replaced by one vector property.
https://github.com/pmmp/PocketMine-MP/commit/9dd0ee7f05ecf8a8569cc28c51457bf9e85392ec

 

Code:

[17:09:59] [Server thread/CRITICAL]: ErrorException: "Undefined property: pocketmine\entity\Zombie::$motion" (EXCEPTION) in "src/pocketmine/entity/Entity" at line 2207

 

like what muq said,

PHP:

/** @var Zombie $entity */
$motion = $entity->getMotion();


 

$motion is a protected property so you can not access it unless you are using it in a class that extends the class you want to use it in.