Can't share screen

When I try to share my screen on Zoom I get a banner message indicating 'Please restart screen sharing as it has stopped unexpectedly'. My attendee will either see a black screen with 'X is trying to share their screen'  or they will only see the first image I show and I can't click to another picture within a deck. I contacted my organization's tech support and they reinstalled the Zoom app so it's the most up to date version. My internet speed was also assessed and it was functioning at a good speed. All my Zoom settings were reviewed by my tech support and everything looked right.  Any ideas on how to fix this?