pgAdmin4 disable master password

Took me a while to find out, that's why I'm posting it here:

1. You need to locate a file named config.py. In my case it's at /usr/share/pgadmin4/web/config.py
2. Now create a file config_local.py (in the same folder) and enter: MASTER_PASSWORD_REQUIRED=False
3. Restart pgAdmin server.
4. The prompt should be gone :-)

Some reference about config files: https://www.pgadmin.org/docs/pgadmin4/dev/desktop_deployment.html#configuration

EDIT: It looks like in higher versions (I now have pgAdmin4 4.26) the directory changed to /usr/pgadmin4/web/

For those on windows, the config.py is located under

C:\Program Files\PostgreSQL\12\pgAdmin 4\web

or

C:\Program Files (x86)\pgAdmin 4\v4\web

Create config_local.py inside of that folder