Server spits out exceptions randomly

[skipfie]

2017-1-1 10:40:58 [CRITICAL] Could not tick level "world": java.lang.NullPointerException
2017-1-1 10:40:58 [ALERT] java.lang.NullPointerException
at de.kniffo80.mobplugin.entities.BaseEntity.getBlocksAround(BaseEntity.java:178)
at cn.nukkit.entity.Entity.checkBlockCollision(Entity.java:1427)
at de.kniffo80.mobplugin.entities.BaseEntity.entityBaseTick(BaseEntity.java:210)
at de.kniffo80.mobplugin.entities.animal.WalkingAnimal.entityBaseTick(WalkingAnimal.java:40)
at de.kniffo80.mobplugin.entities.animal.WalkingAnimal.onUpdate(WalkingAnimal.java:74)
at cn.nukkit.level.Level.doTick(Level.java:753)
at cn.nukkit.Server.checkTickUpdates(Server.java:920)
at cn.nukkit.Server.tick(Server.java:995)
at cn.nukkit.Server.tickProcessor(Server.java:791)
at cn.nukkit.Server.start(Server.java:770)
at cn.nukkit.Server.(Server.java:461)
at cn.nukkit.Nukkit.main(Nukkit.java:68)

2017-1-1 10:41:43 [CRITICAL] Could not tick level "world": java.lang.NullPointerException
2017-1-1 10:41:43 [ALERT] java.lang.NullPointerException
at cn.nukkit.level.Level.getCollisionCubes(Level.java:1310)
at cn.nukkit.level.Level.getCollisionCubes(Level.java:1293)
at de.kniffo80.mobplugin.entities.BaseEntity.move(BaseEntity.java:308)
at de.kniffo80.mobplugin.entities.monster.walking.Spider.onUpdate(Spider.java:87)
at cn.nukkit.level.Level.doTick(Level.java:753)
at cn.nukkit.Server.checkTickUpdates(Server.java:920)
at cn.nukkit.Server.tick(Server.java:995)
at cn.nukkit.Server.tickProcessor(Server.java:791)
at cn.nukkit.Server.start(Server.java:770)
at cn.nukkit.Server.(Server.java:461)
at cn.nukkit.Nukkit.main(Nukkit.java:68)

2017-1-1 10:44:53 [CRITICAL] Could not tick level "world": java.lang.IllegalStateException: Accept exceeded fixed size of 53
2017-1-1 10:44:53 [ALERT] java.lang.IllegalStateException: Accept exceeded fixed size of 53
at java.util.stream.Nodes$FixedNodeBuilder.accept(Nodes.java:1224)
at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1620)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:545)
at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:438)
at cn.nukkit.level.Level.getEntities(Level.java:1977)
at de.kniffo80.mobplugin.entities.WalkingEntity.checkTarget(WalkingEntity.java:37)
at de.kniffo80.mobplugin.entities.WalkingEntity.updateMove(WalkingEntity.java:151)
at de.kniffo80.mobplugin.entities.animal.WalkingAnimal.onUpdate(WalkingAnimal.java:76)
at cn.nukkit.level.Level.doTick(Level.java:753)
at cn.nukkit.Server.checkTickUpdates(Server.java:920)
at cn.nukkit.Server.tick(Server.java:995)
at cn.nukkit.Server.tickProcessor(Server.java:791)
at cn.nukkit.Server.start(Server.java:770)
at cn.nukkit.Server.(Server.java:461)
at cn.nukkit.Nukkit.main(Nukkit.java:68)

[axs-gentoo]

+1. The null pointer exception on Level.getCollisionCubes() especially. This seems to occur right when mobs start swimming through the grass.

[kniffo80]

I'm currently not working on this project. I'm over at PocketMine-MP and PureEntitiesX - which has a better quality and base than any other JAVA based server software.