This error can have al lsorts of causes and without better info nobody can really tell you where it is coming from. It's an internal math error, obviously, and can affect anything from decoding the footage to specific functions and effects. Based on your screenshot the only thing thatr comes to mind is trying to re-encode/ transcode your source file in case its streams are damaged. this may avoid the issue then...
Sorry for this issue. Did you ever find a solution? Please let us know if you have or if you still need help.
No, unfortunately not. The other day it was working just fine, but I tried again today and the same issue occurred. I just do this for a hobby and have had no training, so I don't know how to re-code/transcode a source file like the other user suggested. Do you know how I can fix this? Thank you!