Warning: ini_set(): Session ini settings cannot be changed when a session is active in /var/www/html/index.php on line 6

Warning: ini_set(): Session ini settings cannot be changed when a session is active in /var/www/html/index.php on line 7

Warning: ini_set(): Session ini settings cannot be changed when a session is active in /var/www/html/index.php on line 8

Warning: http_response_code(): Cannot set response code - headers already sent (output started at /var/www/html/index.php:6) in /var/www/html/index.php on line 35
DB env not set: please define PHP_DSN, PHP_DB_USER, PHP_DB_PASS.