Fatal error: Uncaught Error: Undefined constant "DB_HOST" in /home/bas/app_a66c3e65-fa1c-4348-9743-962e01e0876e/src/includes/database.php:21 Stack trace: #0 /home/bas/app_a66c3e65-fa1c-4348-9743-962e01e0876e/src/includes/database.php(11): Database->connect() #1 /home/bas/app_a66c3e65-fa1c-4348-9743-962e01e0876e/src/includes/database.php(113): Database->__construct() #2 /home/bas/app_a66c3e65-fa1c-4348-9743-962e01e0876e/public/categories.php(5): require_once('/home/bas/app_a...') #3 {main} thrown in /home/bas/app_a66c3e65-fa1c-4348-9743-962e01e0876e/src/includes/database.php on line 21