error

[thehexmor]

2019-10-04 [01:20:12] [Server thread/CRITICAL]: InvalidStateException: "Entity is not registered" (EXCEPTION) in "src/pocketmine/entity/Entity" at line 926
2019-10-04 [01:20:12] [Server thread/DEBUG]: #0 plugins/SlapperRotation-master/src/SlapperRotation/Main(32): pocketmine\entity\Entity->getSaveId()
2019-10-04 [01:20:12] [Server thread/DEBUG]: #1 src/pocketmine/plugin/MethodEventExecutor(38): SlapperRotation\Main->onPlayerMove(object pocketmine\event\player\PlayerMoveEvent)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #2 src/pocketmine/plugin/RegisteredListener(98): pocketmine\plugin\MethodEventExecutor->execute(object SlapperRotation\Main, object pocketmine\event\player\PlayerMoveEvent)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #3 src/pocketmine/event/Event(99): pocketmine\plugin\RegisteredListener->callEvent(object pocketmine\event\player\PlayerMoveEvent)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #4 src/pocketmine/Player(1650): pocketmine\event\Event->call()
2019-10-04 [01:20:12] [Server thread/DEBUG]: #5 src/pocketmine/Player(1755): pocketmine\Player->processMovement(integer 1)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #6 src/pocketmine/level/Level(853): pocketmine\Player->onUpdate(integer 11160)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #7 src/pocketmine/level/Level(786): pocketmine\level\Level->actuallyDoTick(integer 11160)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #8 src/pocketmine/Server(2445): pocketmine\level\Level->doTick(integer 11160)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #9 src/pocketmine/Server(2576): pocketmine\Server->checkTickUpdates(integer 11160, double 1570180812.0967)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #10 src/pocketmine/Server(2345): pocketmine\Server->tick()
2019-10-04 [01:20:12] [Server thread/DEBUG]: #11 src/pocketmine/Server(2205): pocketmine\Server->tickProcessor()
2019-10-04 [01:20:12] [Server thread/DEBUG]: #12 src/pocketmine/Server(1784): pocketmine\Server->start()
2019-10-04 [01:20:12] [Server thread/DEBUG]: #13 src/pocketmine/PocketMine(275): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[50] C:\Users\Administrator\Desktop\important\SkyBlock, string[58] C:\Users\Administrator\Desktop\important\SkyBlock\plugins)
2019-10-04 [01:20:12] [Server thread/DEBUG]: #14 src/pocketmine/PocketMine(299): pocketmine\server()
2019-10-04 [01:20:12] [Server thread/DEBUG]: #15 (1): require(string[105] phar://C:/Users/Administrator/Desktop/important/SkyBlock/PocketMine-MP.phar/src/)
2019-10-04 [01:20:12] [Server thread/EMERGENCY]: An unrecoverable error has occurred and the server has crashed. Creating a crash dump
2019-10-04 [01:20:12] [Server thread/EMERGENCY]: Please upload the "C:\Users\Administrator\Desktop\important\SkyBlock\crashdumps/Fri_Oct_4-01.20.12-AKDT_2019.log" file to the Crash Archive and submit the link to the Bug Reporting page. Give as much info as you can.