My video is not exporting

A search for this error code returns many results to explore:
https://forum.shotcut.org/search?q=-1073741819

There is also a collection of ideas here:

Commonly, people will observe the timecode where the export fails, then, go to that same time in their timeline and look at what filters or transitions are being applied. Try changing or removing filters at the point where the export failure occurs.

A recent post with that same error was using a .png file with an alpha channel. After removing the alpha channel, the export succeeded: