Trying to use 'Save as' or 'Save a copy'. PS stops and sends an error message - Sorry, an error occurred. Release has encountered a problem and needs to close. I am using Release 27.11.0

having same problem. tried all the work arounds but still happens

Sorry you're hitting this crash. Adobe's official troubleshooting steps for Photoshop crashes or freezes are:

1. Check for a known issue in Photoshop.

2. Force quit and restart Photoshop, or restart your computer.

3. Update Photoshop to the latest version.

4. Reset Photoshop's preferences.

5. Troubleshoot the GPU and graphics driver.

6. Keep your macOS or Windows operating system up to date.

Full guide: https://helpx.adobe.com/photoshop/kb/troubleshoot-crash-or-freeze.html

If it still crashes after those steps, please add your operating system (and its version) and whether Save As crashes with every file or only certain ones — that will help narrow it down.