Welcome to the Quilting Board!
I hope you find the problem and it is an easy fix :D:D:D
I rethreaded the needle and redid the bobbin last night. I haven't tried a new needle so I'll try that. It was still threaded when it stopped making a seam. The machine was working beautifully...then suddenly it was not. Spooky! I'll let you know if I get it going. Thank you for all your advice. I sincerely appreciate it. I can't get it to the shop because of my broken leg.