rake db:create showing error PG::InvalidParameterValue: ERROR: invalid value for parameter \"client_min_messages\": \"panic\" HINT: Available values: debug5, debug4, debug
I was also facing the same issue. I was using postgres 9.4.1 and upgraded to latest (12.1). Because of the version change, I got this issue. I reverted back to 9.4.1. Is that same with you as well?