Repeated error on chunk unload

[rlf]

I get this repeatedly when using Holographic-Scoreboard with Holograms:

[23:45:17] [Server thread/ERROR]: Could not pass event ChunkUnloadEvent to Holograms v1.8.8
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at net.minecraft.server.v1_8_R3.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:352) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at net.minecraft.server.v1_8_R3.WorldServer.doTick(WorldServer.java:234) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:770) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]
Caused by: java.lang.NullPointerException

It's spamming up my log

[sainttx]

The stack trace seems to be cut off (I don't see any references to my code), do you have a more descriptive paste?

[sainttx]

Appears to be fixed in 673d34f

[rlf]

Still present in v1.8.8b

17.10 00:56:17 [Server] INFO [00:56:17 ERROR]: Could not pass event ChunkUnloadEvent to Holograms v1.8.8b
17.10 00:56:17 [Server] INFO ... 10 more
17.10 00:56:17 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]
17.10 00:56:17 [Server] INFO at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_45]
17.10 00:56:17 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_45]
17.10 00:56:17 [Server] INFO at sun.reflect.GeneratedMethodAccessor57.invoke(Unknown Source) ~[?:?]
17.10 00:56:17 [Server] INFO at com.sainttx.holograms.HologramListener.onChunkUnload(HologramListener.java:42) ~[?:?]
17.10 00:56:17 [Server] INFO at com.sainttx.holograms.HologramManager.onChunkUnload(HologramManager.java:184) ~[?:?]
17.10 00:56:17 [Server] INFO at com.sainttx.holograms.data.Hologram.isInChunk(Hologram.java:108) ~[?:?]
17.10 00:56:17 [Server] INFO at org.bukkit.Location.getChunk(Location.java:78) ~[spigot-1.8.8.jar:git-Spigot-5f38d38-12698ea]

It seems, that somehow the location of a hologram has a null value for world.

Might be caused by the Holographic-Scoreboard trying to create boards before everything is ready - but still...

[sainttx]

This is likely an issue with your own plugin creating invalid locations with null worlds. The loading mechanism currently used does not accept null worlds (causes it to return null) thus invalidating the whole hologram.

This is a check I'll have to add to the plugin when instantiating Hologram objects but ultimately the issue seems to be on your end currently.

[rlf]

Yup, I think I fixed it. Thanks for your consideration though.