Neither overworld nor nether given

thank you for creating this plugin, the kids love it!

heres an error that pops up, looks like maybe a player is trying to use a nether portal in the end?

2020-02-06 16:28:10.760 [main] ERROR - Could not tick level "the_end": java.lang.IllegalArgumentException: Neither overworld nor nether given!
    at cn.nukkit.level.EnumLevel.moveToNether(EnumLevel.java:68)
    at cn.nukkit.entity.Entity.entityBaseTick(Entity.java:1280)
    at cn.nukkit.entity.item.EntityItem.onUpdate(EntityItem.java:166)
    at cn.nukkit.level.Level.doTick(Level.java:821)
    at cn.nukkit.Server.checkTickUpdates(Server.java:1055)
    at cn.nukkit.Server.tick(Server.java:1137)
    at cn.nukkit.Server.tickProcessor(Server.java:905)
    at cn.nukkit.Server.start(Server.java:882)
    at cn.nukkit.Server.<init>(Server.java:567)
    at cn.nukkit.Nukkit.main(Nukkit.java:112)

thanks!!!

Luke

wode490390 / TheEnd

Neither overworld nor nether given #3