I noticed this error on my console this evening. I am clueless as to what it means or how to troubleshoot it. Can anyone give me some insight into what's happening here?
2019-03-23 01:20:43.506 [main] FATAL - Exception while invoking run
java.lang.RuntimeException: java.lang.NullPointerException
at cn.nukkit.Server.batchPackets(Server.java:685) ~[custom.jar:?]
at cn.nukkit.network.RakNetInterface.putPacket(RakNetInterface.java:254) ~[custom.jar:?]
at cn.nukkit.Player.dataPacket(Player.java:1063) ~[custom.jar:?]
at cn.nukkit.Player.dataPacket(Player.java:1048) ~[custom.jar:?]
at cn.nukkit.entity.Entity.spawnTo(Entity.java:844) ~[custom.jar:?]
at nukkitcoders.mobplugin.entities.monster.walking.Zombie.spawnTo(Zombie.java:147) ~[?:?]
at cn.nukkit.entity.Entity.spawnToAll(Entity.java:2026) ~[custom.jar:?]
at nukkitcoders.mobplugin.AutoSpawnTask.createEntity(AutoSpawnTask.java:144) ~[?:?]
at nukkitcoders.mobplugin.entities.spawners.ZombieSpawner.spawn(ZombieSpawner.java:48) ~[?:?]
at nukkitcoders.mobplugin.entities.autospawn.AbstractEntitySpawner.spawn(AbstractEntitySpawner.java:81) ~[?:?]
at nukkitcoders.mobplugin.entities.autospawn.AbstractEntitySpawner.spawn(AbstractEntitySpawner.java:45) ~[?:?]
at nukkitcoders.mobplugin.AutoSpawnTask.run(AutoSpawnTask.java:48) ~[?:?]
at cn.nukkit.scheduler.TaskHandler.run(TaskHandler.java:99) [custom.jar:?]
at cn.nukkit.scheduler.ServerScheduler.runTasks(ServerScheduler.java:296) [custom.jar:?]
at cn.nukkit.scheduler.ServerScheduler.mainThreadHeartbeat(ServerScheduler.java:277) [custom.jar:?]
at cn.nukkit.Server.tick(Server.java:1114) [custom.jar:?]
at cn.nukkit.Server.tickProcessor(Server.java:886) [custom.jar:?]
at cn.nukkit.Server.start(Server.java:863) [custom.jar:?]
at cn.nukkit.Server.<init>(Server.java:554) [custom.jar:?]
at cn.nukkit.Nukkit.main(Nukkit.java:98) [custom.jar:?]
Caused by: java.lang.NullPointerException
at java.lang.ThreadLocal$ThreadLocalMap.expungeStaleEntry(ThreadLocal.java:594) ~[?:1.8.0_191]
at java.lang.ThreadLocal$ThreadLocalMap.getEntryAfterMiss(ThreadLocal.java:440) ~[?:1.8.0_191]
at java.lang.ThreadLocal$ThreadLocalMap.getEntry(ThreadLocal.java:419) ~[?:1.8.0_191]
at java.lang.ThreadLocal$ThreadLocalMap.access$000(ThreadLocal.java:298) ~[?:1.8.0_191]
at java.lang.ThreadLocal.get(ThreadLocal.java:163) ~[?:1.8.0_191]
at cn.nukkit.utils.ZlibThreadLocal.deflate(ZlibThreadLocal.java:42) ~[custom.jar:?]
at cn.nukkit.utils.Zlib.deflate(Zlib.java:48) ~[custom.jar:?]
at cn.nukkit.Server.batchPackets(Server.java:683) ~[custom.jar:?]
... 19 more
2019-03-23 01:20:43.506 [main] FATAL - Exception while invoking run
java.lang.RuntimeException: java.lang.NullPointerException
at cn.nukkit.Server.batchPackets(Server.java:685) ~[custom.jar:?]
at cn.nukkit.network.RakNetInterface.putPacket(RakNetInterface.java:254) ~[custom.jar:?]
at cn.nukkit.Player.dataPacket(Player.java:1063) ~[custom.jar:?]
at cn.nukkit.Player.dataPacket(Player.java:1048) ~[custom.jar:?]
at cn.nukkit.entity.Entity.spawnTo(Entity.java:844) ~[custom.jar:?]
at nukkitcoders.mobplugin.entities.monster.walking.Zombie.spawnTo(Zombie.java:147) ~[?:?]
at cn.nukkit.entity.Entity.spawnToAll(Entity.java:2026) ~[custom.jar:?]
at nukkitcoders.mobplugin.AutoSpawnTask.createEntity(AutoSpawnTask.java:144) ~[?:?]
at nukkitcoders.mobplugin.entities.spawners.ZombieSpawner.spawn(ZombieSpawner.java:48) ~[?:?]
at nukkitcoders.mobplugin.entities.autospawn.AbstractEntitySpawner.spawn(AbstractEntitySpawner.java:81) ~[?:?]
at nukkitcoders.mobplugin.entities.autospawn.AbstractEntitySpawner.spawn(AbstractEntitySpawner.java:45) ~[?:?]
at nukkitcoders.mobplugin.AutoSpawnTask.run(AutoSpawnTask.java:48) ~[?:?]
at cn.nukkit.scheduler.TaskHandler.run(TaskHandler.java:99) [custom.jar:?]
at cn.nukkit.scheduler.ServerScheduler.runTasks(ServerScheduler.java:296) [custom.jar:?]
at cn.nukkit.scheduler.ServerScheduler.mainThreadHeartbeat(ServerScheduler.java:277) [custom.jar:?]
at cn.nukkit.Server.tick(Server.java:1114) [custom.jar:?]
at cn.nukkit.Server.tickProcessor(Server.java:886) [custom.jar:?]
at cn.nukkit.Server.start(Server.java:863) [custom.jar:?]
at cn.nukkit.Server.<init>(Server.java:554) [custom.jar:?]
at cn.nukkit.Nukkit.main(Nukkit.java:98) [custom.jar:?]
Caused by: java.lang.NullPointerException
at java.lang.ThreadLocal$ThreadLocalMap.expungeStaleEntry(ThreadLocal.java:594) ~[?:1.8.0_191]
at java.lang.ThreadLocal$ThreadLocalMap.getEntryAfterMiss(ThreadLocal.java:440) ~[?:1.8.0_191]
at java.lang.ThreadLocal$ThreadLocalMap.getEntry(ThreadLocal.java:419) ~[?:1.8.0_191]
at java.lang.ThreadLocal$ThreadLocalMap.access$000(ThreadLocal.java:298) ~[?:1.8.0_191]
at java.lang.ThreadLocal.get(ThreadLocal.java:163) ~[?:1.8.0_191]
at cn.nukkit.utils.ZlibThreadLocal.deflate(ZlibThreadLocal.java:42) ~[custom.jar:?]
at cn.nukkit.utils.Zlib.deflate(Zlib.java:48) ~[custom.jar:?]
at cn.nukkit.Server.batchPackets(Server.java:683) ~[custom.jar:?]
... 19 more
