Verify/Rebuild data - QB for Mac 2019

I am using desktop version of QB 2019 for Mac.  Ever since I upgraded to Monterey, almost every time I write a check or try to enter a charge in the register, I get the error message attached.  Since I am using an older version, there is no help from QB customer service.  They sent me a self help article on Verify/Rebuild data.  I failed the verification check so went on to rebuild my data.  Have to make a backup before rebuilding - cannot make a backup - "Backup failed - Quickbooks could not copy the company file"; however, when I exit out of QB, I can make a backup.  It then asks if I want to continue without making a backup, and since I do have one, I say "yes".  I then get the original error message again (attached file) so I am just going around in circles. 

If I were to open a new company file, with a different name, and copy/download my current backup, would that work?  ANY suggestions would be so appreciated!