Warning: require_once(config/database.php): Failed to open stream: No such file or directory in /var/www/html/classes/User.php on line 2

Fatal error: Uncaught Error: Failed opening required 'config/database.php' (include_path='.:/usr/local/lib/php') in /var/www/html/classes/User.php:2 Stack trace: #0 /var/www/html/api/send_message.php(7): require_once() #1 {main} thrown in /var/www/html/classes/User.php on line 2