2020 rotary hook continuous one direction pfaff...

Question

machine stopped sewing and the needle bar was stuck. was basting at the time with the one stitch at a time #10 mode. removed the needle so could move the needle bar and the rotary hook now goes around in continuous one direction or the other so cannot put a needle in and it seems to rub plate as it goes around. the feed dogs still go up and down. What happened??? It this a major repair or something I can resolve or repair myself. This machine does not seem to come apart as any of my others have. Is this because it is electronic or what.