Warning: session_start(): Session cannot be started after headers have already been sent in /var/www/html/getTicket.php on line 25

Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, bool given in /var/www/html/getTicket.php:61 Stack trace: #0 /var/www/html/getTicket.php(61): sqlsrv_query(false, 'select top (3) ...') #1 {main} thrown in /var/www/html/getTicket.php on line 61