is a terrible common problem on premiere pro exports. Many export errors, plenty of time wasted, damaged projects. ?? Why adobe does not FIX IT ?? Million people have the same problem and research solutions. Maybe the best solution is to change this software to another. We are waiting YEARS to FIX ADOBE THIS SIRIUS PROBLEM.
The vast majority of users are not having export issues. Yes, you will see those like yourself posting, but understand the people not having problems don't spend time posting they're not. It skews the impressions.
That said ... there are almost always issues in someone's system, project files, media, or workflows ... sometimes multiple things ... that cause these errors. So if you'll post your gear, media, and workflow ... along with the specific sequence and export settings probably using screen-grabs drag/dropped onto your reply box, we can probably fix what ails you.