What is "crypt key missing" error in Pgadmin4 and how to resolve it?

I am using pgadmin version 6.1. I am trying to connect to my postgres db hosted in docker with pgadmin on my local machine.

I used the below command to get the docker container ip address: docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id

When starting Pgadmin4, did you set a "master" password or just bypass that prompt? I just ran into the same thing and restarted setting the "master" password and was able to continue without that error.