I wanted to set an UNU Laboratories Configurator on a UNU Laboratories Rabbit Coupé. My friend was able to join, cause he was at a different place when he logged out the last time. Crash-log attached.
Chunkfix didn't work, kill @e neither.

crash-2022-07-28_14.09.07-server.txt

Don't use that. That's a debug thing. You need to poke Luigi about that. Marking as the pack's issue and leaving ticket open until solved.

Was wrong, was my fault, is fixed in beta, will be fixed in release.

Fixed in V22.0.0