Command invalid when db is down

[Sheikah45]

When the database is down and someone tries to login the error message from the server for why it fails claims that the command is invalid rather than saying the server can't reach the db.

It would probably be good to change this just for debugging purposes

[KaukaHan]

nowdays without the database the devserver crashes.

[Askaholic]

You'd probably have to start the devserver while the database is up and then take the database down to reproduce this.

[benjamin-lawson]

@Askaholic Could you review my PR when you get the chance? All actions are passing including the unit test that I added.