I get an error
[MythicMobs] [31m[EVENTS] Exception thrown whilst handling event: org.bukkit.event.world.EntitiesUnloadEvent[37m [12:43:31 WARN]: java.lang.NullPointerException: Cannot invoke "io.lumine.xikage.mythicmobs.adapters.AbstractEntity.isValid()" because the return value of "io.lumine.xikage.mythicmobs.mobs.ActiveMob.getEntity()" is null [12:43:31 WARN]: at MythicMobs Premium.jar//io.lumine.xikage.mythicmobs.mobs.MobManager.resetActiveMobEntity(MobManager.java:501) [12:43:31 WARN]: at MythicMobs Premium.jar//io.lumine.xikage.mythicmobs.mobs.MobManager.getMythicMobInstance(MobManager.java:486) [12:43:31 WARN]: at MythicMobs Premium.jar//io.lumine.xikage.mythicmobs.mobs.MobManager.getMythicMobInstance(MobManager.java:476) [12:43:31 WARN]: at MythicMobs Premium.jar//io.lumine.xikage.mythicmobs.adapters.bukkit.listeners.ChunkListeners.unloadChunkEntities(ChunkListeners.java:105) [12:43:31 WARN]: at MythicMobs Premium.jar//io.lumine.xikage.mythicmobs.utils.Delegates$ConsumerToBiConsumerSecond.accept(Delegates.java:144) [12:43:31 WARN]: at MythicMobs Premium.jar//io.lumine.xikage.mythicmobs.utils.events.functional.single.EventListener.execute(EventListener.java:131) [12:43:31 WARN]: at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) [12:43:31 WARN]: at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) [12:43:31 WARN]: at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:628) [12:43:31 WARN]: at org.bukkit.craftbukkit.v1_17_R1.event.CraftEventFactory.callEntitiesUnloadEvent(CraftEventFactory.java:1881) [12:43:31 WARN]: at net.minecraft.world.level.entity.PersistentEntitySectionManager.a(PersistentEntitySectionManager.java:326) [12:43:31 WARN]: at net.minecraft.world.level.entity.PersistentEntitySectionManager.d(PersistentEntitySectionManager.java:350) [12:43:31 WARN]: at net.minecraft.world.level.entity.PersistentEntitySectionManager.lambda$processUnloads$12(PersistentEntitySectionManager.java:369) [12:43:31 WARN]: at it.unimi.dsi.fastutil.longs.LongCollection.removeIf(LongCollection.java:197) [12:43:31 WARN]: at net.minecraft.world.level.entity.PersistentEntitySectionManager.f(PersistentEntitySectionManager.java:368) [12:43:31 WARN]: at net.minecraft.world.level.entity.PersistentEntitySectionManager.tick(PersistentEntitySectionManager.java:399) [12:43:31 WARN]: at net.minecraft.server.level.WorldServer.doTick(WorldServer.java:825) [12:43:31 WARN]: at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1652) [12:43:31 WARN]: at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:528) [12:43:31 WARN]: at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1507) [12:43:31 WARN]: at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:1300) [12:43:31 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:322) [12:43:31 WARN]: at java.base/java.lang.Thread.run(Thread.java:831)
and
[12:16:06 WARN] [MythicMobs] Mob type ZOMBIE not found - removing mob dcfb7638-5694-4180-8a8b-cf734c81f845