This file has unsaved changes

Hi all,

I’ve been working since a few days on a project, though I can’t go any further as I keep getting this error message “This file has unsaved changes” both on the App and browser. I really need to get going, if anybody could help.

I already tried :

Rebooting computer
Cleaning cache and cookies
Reinstall the App
Rebooting rooter

Running out of ideas and time… Thank you !!