Fatal error: Uncaught ArgumentCountError: Too few arguments to function Session::set(), 1 passed in /var/www/html/www.atkielski.com/gallery/paris/display.php on line 7 and exactly 2 expected in /var/www/html/www.atkielski.com/classes/Session.php:6 Stack trace: #0 /var/www/html/www.atkielski.com/gallery/paris/display.php(7): Session::set() #1 /var/www/html/www.atkielski.com/index.php(36): require('...') #2 {main} thrown in /var/www/html/www.atkielski.com/classes/Session.php on line 6