General Info

• I didn't added any mods
• I get this issue consistently in single-player
• I get this issue consistently in multi-player
• I am crashing and can provide my crash report(s)
• I am using the latest version of the modpack

Your launcher

Prism

Modpack version

4.0.1

Describe your issue

Certain bosses do not spawn in multiplayer. There may be more, these are the only ones I found so far:

• Terminus (cataclysm apotheosis lite; the artifact, not the bow) doesn't start the bossrush, but still gets consumed.
• The Twilight Forest final boss does not spawn. The spawner still disappears. Using a Time Powder also doesn't spawn it, but consumes the powder.

Steps to reproduce the issue

No response

Additional Information

I don't have access to the server log but can ask for it if required.

I have no easy way to check if things are not working on other servers than the one my friends and I are playing on in survival, maybe someone else can comment on the reproducability and provide further information; since things work fine in singleplayer, it may just be an issue with our server.

Could you please check update 4.0.5 and confirm whether the issue is still present?

Terminus doesn't exist anymore since 4.0.4, so that obviously isn't an issue anymore, however the final boss still does not spawn.
There is nothing in the server's latest log, not even in the debug log, when the final boss should have spawned (it was a few seconds before I disconnected).

This was tested with the server files hosted on my local pc together with the client since our server ran out.

I would have used pastebin to share the entire log, but even the latest log already gives me a

due to the absurd amount of errors in the log.

Server log: https://gist.github.com/JohanniklasLp/121661d528c0c8f9beaef1ef33805922

Client log: https://gist.github.com/JohanniklasLp/fb4ff3b7d00a1526ac08e20be7eca4eb

(Both are truncated due to their length, you can view the full file at the top of each gist)
This is from a fully fresh install