Trouble opening Google-based document on Brave Browser

For a few months now my browser does not open anything Google-based. Google Drive files or gmail, nothing will open in Brave.

The error message when I enter the URL of www.gmail.com is:

400 That’s an error.

The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

At the moment I need to use Chrome for all my Google files and it’s a pain in the butt. Please help.

Make sure you have shields down and then try opening the file, maybe that will work for you

Thanks, but that doesn’t help.

Have you tried this with multiple files from different sources?..Maybe a particular file is causing the problem…

For once try to reset the browser to the default settings, i suggest.
brave://settings/resetProfileSettings?origin=userclick