Postgresql can't connect application server through PGAdmin4

Question

I installed PostgreSql on my Windows machine. I can connect to PostgreSql through cmd. But when I want to launch pgAdmin I am getting this error message.

Answer 1

In my case, SERVER_MODE was already False in config_distro.py. I then proceeded to start pgadmin4 as an administrator. This also did not work. Finally, I resolved this by restarting postgresql service in services.msc. postgres service restart