OSX
Log file /usr/local/var/postgres/server.log
An Error:
psql: error: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
A solution on SO.
An error:
The data directory was initialized by PostgreSQL version 12, which is not compatible with this version 13.2.
A solution on SO: brew postgresql-upgrade-database