I have a modpack containing CGM. The modpack works fine in singleplayer worlds, but when I attempt to launch my server with the modpack it crashes the server. Attached is the crashlog generated by the server.

crash-2021-02-26_07.29.57-server.txt

Closing since I believe I fixed this and no one uses 1.15.2 anymore.

I have the same issue
crash-2021-06-25_22.39.56-server.txt
If I use an older version of the mod (0.16.1) the dedicated server works fine

I've received the same error running 15.2, using cgm-1.0-1.15.2.jar

crash-2021-04-27_14.01.57-server.txt