Fatal error: Uncaught TypeError: mktime(): Argument #1 ($hour) must be of type int, string given in /var/www/phpicalendar/functions/date_functions.php:393 Stack trace: #0 /var/www/phpicalendar/functions/date_functions.php(393): mktime() #1 /var/www/phpicalendar/functions/ical_parser.php(317): extractDateTime() #2 /var/www/phpicalendar/month.php(5): require_once('...') #3 {main} thrown in /var/www/phpicalendar/functions/date_functions.php on line 393