Cannot locate Damaged file can't be opened

Upgraded from Mojave to Catalina really without thinking. So I've lost a few files.

Get booted up and I keep getting an error stating

"geunmeidmbaq is damaged and can't be opened"

My options are show in folder (which does nothing of selected) and OK (which thenmsg comes right back instantly)

I have rebooted, I have search for this file name in every corner of my computer and it shows up nownwhere

I have paid for a cleaner program and nothing.

Please help me make this error message go away for good. k