I suspect you're using pgAdmin shipped with PostgeSQL 10 installer which is an older version. Please check if you have two pgAdmin installed - one which comes with PostgreSQL bundle (you can uninstall this) and another which you have separately downloaded and installed.
I'm doing an SQL training course and I'm struggling to open pgadmin.
I've been in contact with course provider but they've not been able to resolve my issue despite multiple email exchanges and I wonder if you might be able to help please?
However, when I open pgAdmin, I receive this message:
I;ve been advised to update my system settings (.i.e. Path in Environment Variables) to the following but it's not resolved the issue. I'd be most grateful if you could please help.