Multiverse-Core: Server crashes on world unload

Information

• Server version:

• Full output of /mv version -p:

• Server log:

Details

I was <able / not able> to reproduce my issue on a freshly setup and up-to-date server with the latest version of Multiverse plugins with no other plugins and with no kinds of other server or client mods.

Description

Steps to reproduce

Expected behavior

Screenshots

I am using the newest version with 1.17 spigotmc When I join a world it prob. works and loads the world but if I unload the world the server crashes (shut down)