Describe the bug you're experiencing

When I attempt to teleport to another dimension (any, vanilla or modded) the game crashes. I receive a packet error and get tossed to the server select screen. This only happens with Brutal Bosses installed, and the error points to a bossbar overlay but not clear, at least to noob me, whether the conflict is originating from Brutal Bosses or another mod. I've been online for... eh about 12 hours so snipping the log to where the error occurs and attaching. Didn't figure you'd want 643814 lines of log. If needed, I can log in clean and do an immediate teleport for a new error log.

Specific error::

[29Sep2025 20:14:08.050] [Render thread/ERROR] [net.minecraft.client.multiplayer.ClientCommonPacketListenerImpl/]: Failed to handle packet net.minecraft.network.protocol.game.ClientboundBossEventPacket@10147896
java.lang.NullPointerException: Cannot invoke "net.minecraft.client.gui.components.LerpingBossEvent.setName(net.minecraft.network.chat.Component)" because the return value of "java.util.Map.get(Object)" is null

And if this ISN'T BB causing it, please let me know who the culprit is so I can give them the boot!

Line 1 for the attached log is the immediate aftermath of my entering the "/execute in atlantis:atlantis run tp 0 100 0" command. As noted, this happens for any dimension, including vanilla.

latest snipped.log

Reproducability

Minecraft 1.21.1
neoforge-21.1.209
brutalbosses-1.21-8.4

1. Attempt to teleport to another dimension by any means
   in the case of the attached log, I used the execute command
2. Crash

Also a note, while the mod is available for 1.21.1 on Curseforge for Neoforge, those aren't options in the two dropdowns below...

Mod up to date

• Before submitting this issue I updated to the newest version and reproduced it

Minecraft version

1.20.4

Modloader version

Forge

Logs and Datapacks

https://gist.github.com/rainweaver76/456c9df8d515ec1c029420209fa90617.js