Error

[15:44:03] [Server thread/CRITICAL]: [MysteryCrate] Could not execute task JackMD\MysteryCrate\UpdaterEvent: Undefined index: level
[15:44:03] [Server thread/CRITICAL]: ErrorException: "Undefined index: level" (EXCEPTION) in "MysteryCrate.phar/src/JackMD/MysteryCrate/UpdaterEvent" at line 100
[15:44:03] [Server thread/DEBUG]: #0 MysteryCrate.phar/src/JackMD/MysteryCrate/UpdaterEvent(100): pocketmine\utils\Utils::errorExceptionHandler(integer 8, string Undefined index: level, string phar://C:/Users/Zander Maitland/Desktop/Pocketmine/plugins/MysteryCrate.phar/src/JackMD/MysteryCrate/UpdaterEvent.php, integer 100, array Array())
[15:44:03] [Server thread/DEBUG]: #1 src/pocketmine/scheduler/TaskHandler(163): JackMD\MysteryCrate\UpdaterEvent->onRun(integer 96149)
[15:44:03] [Server thread/DEBUG]: #2 src/pocketmine/scheduler/TaskScheduler(203): pocketmine\scheduler\TaskHandler->run(integer 96149)
[15:44:03] [Server thread/DEBUG]: #3 src/pocketmine/plugin/PluginManager(711): pocketmine\scheduler\TaskScheduler->mainThreadHeartbeat(integer 96149)
[15:44:03] [Server thread/DEBUG]: #4 src/pocketmine/Server(2509): pocketmine\plugin\PluginManager->tickSchedulers(integer 96149)
[15:44:03] [Server thread/DEBUG]: #5 src/pocketmine/Server(2258): pocketmine\Server->tick()
[15:44:03] [Server thread/DEBUG]: #6 src/pocketmine/Server(2132): pocketmine\Server->tickProcessor()
[15:44:03] [Server thread/DEBUG]: #7 src/pocketmine/Server(1713): pocketmine\Server->start()
[15:44:03] [Server thread/DEBUG]: #8 src/pocketmine/PocketMine(237): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string C:\Users\Zander Maitland\Desktop\Pocketmine\, string C:\Users\Zander Maitland\Desktop\Pocketmine\plugins\)
[15:44:03] [Server thread/DEBUG]: #9 C:/Users/Zander Maitland/Desktop/Pocketmine/PocketMine-MP.phar(1): require(string phar://C:/Users/Zander Maitland/Desktop/Pocketmine/PocketMine-MP.phar/src/pocketmine/PocketMine.php)