Now I am getting this error…I don’t get it because it was working fine and now something wrong 
/usr/local/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4.1/lib/active_record/connection_adapters/postgresql_adapter.rb:83:in `rescue in new_client’: connection to server at “127.0.0.1”, port 5432 failed: Connection refused (ActiveRecord::ConnectionNotEstablished)
Is the server running on that host and accepting TCP/IP connections?