[postgresql] "psql: could not connect to server: Connection refused" Error when connecting to remote database

Mine was quite straightforward if you are on a Mac try:

brew install postgres

This will tell you if you have it already install and what version or install the latest version for you if not then run

brew upgrade postgresql

This will make sure you have the latest version installed then finally

brew services start postgresql

This will start the service again. I hope this helps someone.

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