Server crashes

[ghost]

2019-07-21 [00:55:25] [Server thread/CRITICAL]: TypeError: "Return value of jkorn\pvpcore\world\WorldHandler::getWorldFromLevel() must be an instance of jkorn\pvpcore\world\PvPCWorld, null returned" (EXCEPTION) in "plugins/PvPCore-PMMP.phar/src/jkorn/pvpcore/world/WorldHandler" at line 75 2019-07-21 [00:55:25] [Server thread/DEBUG]: #0 plugins/PvPCore-PMMP.phar/src/jkorn/pvpcore/PvPCoreListener(38): jkorn\pvpcore\world\WorldHandler->getWorldFromLevel(object pocketmine\level\Level) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #1 src/pocketmine/plugin/MethodEventExecutor(38): jkorn\pvpcore\PvPCoreListener->onEntityDamage(object pocketmine\event\entity\EntityDamageByChildEntityEvent) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #2 src/pocketmine/plugin/RegisteredListener(98): pocketmine\plugin\MethodEventExecutor->execute(object jkorn\pvpcore\PvPCoreListener, object pocketmine\event\entity\EntityDamageByChildEntityEvent) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #3 src/pocketmine/event/Event(99): pocketmine\plugin\RegisteredListener->callEvent(object pocketmine\event\entity\EntityDamageByChildEntityEvent) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #4 src/pocketmine/entity/Entity(992): pocketmine\event\Event->call() 2019-07-21 [00:55:25] [Server thread/DEBUG]: #5 src/pocketmine/entity/Living(574): pocketmine\entity\Entity->attack(object pocketmine\event\entity\EntityDamageByChildEntityEvent) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #6 src/pocketmine/Player(3722): pocketmine\entity\Living->attack(object pocketmine\event\entity\EntityDamageByChildEntityEvent) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #7 src/pocketmine/entity/projectile/Projectile(318): pocketmine\Player->attack(object pocketmine\event\entity\EntityDamageByChildEntityEvent) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #8 src/pocketmine/entity/projectile/Arrow(150): pocketmine\entity\projectile\Projectile->onHitEntity(object pocketmine\Player, object pocketmine\math\RayTraceResult) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #9 plugins/TeaSpoon_dev-279.phar/src/CortexPE/entity/projectile/Arrow(65): pocketmine\entity\projectile\Arrow->onHitEntity(object pocketmine\Player, object pocketmine\math\RayTraceResult) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #10 src/pocketmine/entity/projectile/Projectile(252): CortexPE\entity\projectile\Arrow->onHitEntity(object pocketmine\Player, object pocketmine\math\RayTraceResult) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #11 src/pocketmine/entity/Entity(1472): pocketmine\entity\projectile\Projectile->move(double 0.94256640544355, double 0.77941198937796, double -0.26317343611499) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #12 plugins/TeaSpoon_dev-279.phar/src/CortexPE/entity/projectile/Arrow(75): pocketmine\entity\Entity->onUpdate(integer 4637) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #13 src/pocketmine/level/Level(849): CortexPE\entity\projectile\Arrow->onUpdate(integer 4637) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #14 src/pocketmine/level/Level(787): pocketmine\level\Level->actuallyDoTick(integer 4637) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #15 src/pocketmine/Server(2419): pocketmine\level\Level->doTick(integer 4637) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #16 src/pocketmine/Server(2542): pocketmine\Server->checkTickUpdates(integer 4637, double 1563638125.3666) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #17 src/pocketmine/Server(2319): pocketmine\Server->tick() 2019-07-21 [00:55:25] [Server thread/DEBUG]: #18 src/pocketmine/Server(2195): pocketmine\Server->tickProcessor() 2019-07-21 [00:55:25] [Server thread/DEBUG]: #19 src/pocketmine/Server(1782): pocketmine\Server->start() 2019-07-21 [00:55:25] [Server thread/DEBUG]: #20 src/pocketmine/PocketMine(259): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[24] /steadym/srv/takiserver/, string[32] /steadym/srv/takiserver/plugins/) 2019-07-21 [00:55:25] [Server thread/DEBUG]: #21 (1): require(string[90] phar:///steadym/sys/multiphar/20190713_pmmp_v112_API390.phar/src/pocketmine/Pock)
Server crashes