I recently finally updated my MacBook with the latest update MacOS Big Sur.
It had been prompting me for months to update. I have been aware some programs may not work after this update, which is why I had waited so long to allow software developers to update their programs before I installed the new software.
One issue I have experienced is with my old version of Lightroom, I'm still running on Lightroom 5.
It would sit on this with no progress what so ever.