Fix Is the server running on host "localhost" (::1) and accepting TCP/IP connections on port 5432?

Most likely it's because your system shutdown unexpectedly Try

postgres -D /opt/homebrew/var/postgres # for Intel M1
postgres -D /usr/local/var/postgres # for Silicon

You might see

FATAL:  lock file "" already exists
HINT:  Is another postmaster (PID 449) running in data directory "/usr/local/var/postgres"?

Then try

kill -9 PID


kill -9 449 And it should start postgres normally