Fatal error: Uncaught TypeError: mktime(): Argument #4 ($month) must be of type ?int, string given in /var/www/vhosts/e-beans.net/httpdocs/booking/calendar.php:94 Stack trace: #0 /var/www/vhosts/e-beans.net/httpdocs/booking/calendar.php(94): mktime() #1 {main} thrown in /var/www/vhosts/e-beans.net/httpdocs/booking/calendar.php on line 94