Вот кот ошибки версия 1.2.10
[22:49:52] [Server thread/CRITICAL]: Невозможно выполнить такт в мире "world": Argument 1 passed to pocketmine\network\mcpe\NetworkBinaryStream::putAttributeList() must be an instance of pocketmine\entity\Attribute, array given, called in C:\Users\VM\Desktop\SRV\PocketMine_1.2.10\src\pocketmine\network\mcpe\protocol\UpdateAttributesPacket.php on line 47
[22:49:52] [Server thread/CRITICAL]: TypeError: "Argument 1 passed to pocketmine\network\mcpe\NetworkBinaryStream::putAttributeList() must be an instance of pocketmine\entity\Attribute, array given, called in C:\Users\VM\Desktop\SRV\PocketMine_1.2.10\src\pocketmine\network\mcpe\protocol\UpdateAttributesPacket.php on line 47" (EXCEPTION) in "src/pocketmine/network/mcpe/NetworkBinaryStream" at line 265