Adobe premiere elements 2021 getting this "error compiling movie. UNKNOWN ERROR"

The only past discussions I have are about Premiere Pro, but they may help here

Error Compiling Movie... some past discussions and ideas
May be caused by . in name https://community.adobe.com/t5/Premiere-Pro/quot-Error-Compiling-Movie-Unknown-Error-quot-HELPFUL-TIP/td-p/8402473

-http://helpx.adobe.com/premiere-pro/kb/error-compiling-movie-rendering-or.html
-and a long discussion https://community.adobe.com/t5/Premiere-Pro/quot-Error-compiling-movie-Unknown-Error-quot-OR-program-crash/td-p/5240672

Also

You need to provide details for anyone to help
Mac or Windows and exact version of the operating system
Exact Premiere Elements version (any updates applied?)
CPU brand and model and clock speed
Amount of computer memory (RAM)
Video adapter brand and model and driver version and amount of video ram
Number and size and type of hard drives
What kind of video are you editing?
-hint 4k video on an underpowered computer will not play well