-MC 1.7.10
Latest 1.7.10 version of
-PhysicaCore-1.7.10-1.5.6-3
-Physica Nuclear Physics 1.5.7
-PhysicaForcefield-1.7.10-1.5.6-4

Making a modpack and eventual server to go along with it, private for friends only.
There's a decent amount of mods, I can provide a list if needed.
Installed Core 1st, no problems, then tried to add Forcefield and got this crash.
crash-2021-11-25_01.11.13-client.txt
Then added Nuclear Physics which made the crash go away, I'm guessing because it added the item in the crash report.

But then this happened.

If you need any other info please let me know.

Dont know why this happens but 1.7 isnt supported anymore so this wont be fixed if its a bug