multiple crashes on a dungeon

Hey, I noticed that you are on mythic dungeons 1.4.1 on 1.21.1, this is unsupported. Id like you to try to reproduce this on the latest dev build and let me know if it still happens. Also, If possible, include the server's logs from start to when the crash happens. Thanks a lot.

Hello, thank you for your reply, we will test this tomorrow

Hello @bedwarshurts , we have put the latest version 2.0.0 in snapshot, for the moment with 3 games played, we have had no crashes, we will continue the tests to see the rest

hi @bedwarshurts we just had a crash, here is the crash report and logs

[Legacy attachment omitted]

[Legacy attachment omitted]

and an another crash

[Legacy attachment omitted]

[Legacy attachment omitted]

May I have a copy of the world file CAVOK please?

yes of course, here it is https://we.tl/t-KpMHvndhhV

Hey, I am looking at this right now, I am not sure whats wrong, I ran the world and dungeon fine through my test server. I originally thought this is because a newer version world being loaded on an older version but that seems not to be the case.

This is unfortunately probably unrelated to mythic dungeons as I was able to run the map fine on my test server. I also noticed all of your crash reports happened at around the same location if you can confirm that this could be helpful information for you.

But yea unfortunately I doubt this is related to mythic dungeons and I cant do much more to identify the root cause of this. If you manage to fix it though let me know the root cause im really curious, or if you find any more information that could help me dig further let me know.

I also wanted to add that I noticed this in your stacktrace

java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectArrayList.get(int)" because "this.wrapped" is null
	at it.unimi.dsi.fastutil.objects.ObjectOpenHashSet$SetIterator.next(ObjectOpenHashSet.java:575)
	at net.minecraft.network.protocol.game.ClientboundUpdateAttributesPacket.<init>(ClientboundUpdateAttributesPacket.java:34)
	at net.minecraft.server.level.ServerEntity.sendDirtyEntityData(ServerEntity.java:426)

I am not that experienced with nms to be able to read that properly, however my guess would be that a plugin didnt initialise an entity's attributes correctly? I could be wrong about this but I truly hope im right and this helps narrow down the issue

Hey, I took a better look, this is indeed caused by MythicMobs, updating mythic to latest release fixes it

Hello again, thank you for your feedback. Tomorrow we'll update Mythic Mobs and Crucible (we have it installed), and I'll let you know if everything is working correctly. If you need the mob configuration, don't hesitate to ask.

Thank you.

@bedwarshurts Yo, we updated the plugins and we no longer have crashes, the problem comes from mythicmobs, thank you very much