when player leaves/joins too fast

[inxomnyaa]

Fatal error: Call to a member function sendContents() on null in phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/plugins/WorldProtect_v2.2.0.phar/src/aliuly/worldprotect/GmSaveInv.php on line 37

Call Stack:
    0.0142     435968   1. {main}() C:\Users\Administrator\Desktop\Server\MinecraftPE\WolvesFortressIM\ClearSky_1.0dev.phar:0
    0.0165     430784   2. require_once('phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/PocketMine.php') C:\Users\Administrator\Desktop\Server\MinecraftPE\WolvesFortressIM\ClearSky_1.0dev.phar:1
    0.1523     573400   3. pocketmine\Server->__construct() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/PocketMine.php:442
   20.8706   34460696   4. pocketmine\Server->start() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/Server.php:1723
   20.8893   34476912   5. pocketmine\Server->tickProcessor() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/Server.php:2130
 4202.1082  119912456   6. pocketmine\Server->tick() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/Server.php:2252
 4202.1107  119912696   7. pocketmine\scheduler\ServerScheduler->mainThreadHeartbeat() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/Server.php:2510
 4202.1109  119912448   8. pocketmine\scheduler\TaskHandler->run() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/scheduler/ServerScheduler.php:227
 4202.1109  119912448   9. aliuly\worldprotect\common\PluginCallbackTask->onRun() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/ClearSky_1.0dev.phar/src/pocketmine/scheduler/TaskHandler.php:130
 4202.1109  119912712  10. aliuly\worldprotect\GmSaveInv->loadInv() phar://C:/Users/Administrator/Desktop/Server/MinecraftPE/WolvesFortressIM/plugins/WorldProtect_v2.2.0.phar/src/aliuly/worldprotect/common/PluginCallbackTask.php:49

[Aericio]

cri