Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /var/www/public/backinclude/config.inc.php:21 Stack trace: #0 /var/www/public/set_include.php(6): connect_db() #1 /var/www/public/main.php(9): include('/var/www/public...') #2 {main} thrown in /var/www/public/backinclude/config.inc.php on line 21