Looking through the crash reports, it always seems to be a ClassNotFoundException, but always on different mods and when i look inside the .jar the class is definitely always there.
Logs:
https://pastebin.com/msJRAvHE Crash report
https://pastebin.com/N8fHhbmN Crash report 2
https://drive.google.com/file/d/1KdBbXrxWBXhh-oS8XuY2rrPu2UMZ5HLs/view?usp=sharing Latest log (still too big for pastebin)