Fatal error: Uncaught Error: Undefined constant "DB_HOST" in /var/www/html/models/CommonModels.php:15 Stack trace: #0 /var/www/html/models/CommonModels.php(401): CommonModels->pdoConnect() #1 /var/www/html/config/config.php(163): CommonModels->getSettings() #2 /var/www/html/index.php(7): require_once('...') #3 {main} thrown in /var/www/html/models/CommonModels.php on line 15