Every time that I do the ./launcher rebuild app my discourse installation end up with a welcome message, as it was my first time using it. So I need to log in, restore a backup, then it works.
What can I do to fiz it? Or what’s the reason for that error
Sounds like the path for the volumes in the app.yml are broken. Can you paste that part of the file here, and ensure the correspondent folders exist and aren’t using wrong permissions?