Warning: session_start(): Session cannot be started after headers have already been sent in /var/task/user/api/index.php on line 3

Fatal error: Uncaught mysqli_sql_exception: No such file or directory in /var/task/user/api/db_config.php:9 Stack trace: #0 /var/task/user/api/db_config.php(9): mysqli->__construct('localhost', 'root', Object(SensitiveParameterValue), 'your_database') #1 /var/task/user/api/index.php(4): require_once('/var/task/user/...') #2 {main} thrown in /var/task/user/api/db_config.php on line 9