How to correct 3100 error

I've had my A1 for about 6 months. All of my printing has been done via the cloud. I've had no issues until the past week. I now always get a 3100 error when sending the project to the printer. Searching for this error online doesn't turn up much useful info. I've reset the printer and the computer. I have also tried the bambu slicer on a different computer. Still the same 3100 error. If I switch over to LAN mode I'm able to print.

Anyone have any suggestions?

Should I just forget about cloud printing and use LAN mode?

What does everyone else typically use - LAN or cloud?