Finder not finding files (Google Drive, pCloud and Dropbox installed)

Hi

Finder can't locate some local files on my HD, even though the Google Drive web interface can. I'm talking about files which are physically present on my HD, and synced with Google Drive.

I have Google Drive, pCloud and Dropbox installed (I need all three for various reasons).

Has anyone had the same kind of problem, and been able to solve it?

Thank you

Guillaume