Laravel PDOException SQLSTATE[HY000] [1049] Unknown database 'forge'

Question

I am using Laravel to connect to MySQL database.

I got this exception:

PDOException
SQLSTATE[HY000] [1049] Unknown database \'forge\'

Answer 1

I did all of them but didn't work, I find out should stop php artisan serve(Ctrl + C) and start php artisan serve again.