Fatal error: Uncaught TypeError: strtolower(): Argument #1 ($string) must be of type string, array given in /var/www/html/express-page.com/mysql_connect.php:5 Stack trace: #0 /var/www/html/express-page.com/mysql_connect.php(5): strtolower() #1 /var/www/html/express-page.com/index.php(13): require('...') #2 {main} thrown in /var/www/html/express-page.com/mysql_connect.php on line 5