Fatal error: Uncaught TypeError: date_create(): Argument #2 ($timezone) must be of type ?DateTimeZone, bool given in /home/vmrm/public_html/szertar/zeittafel.php:611
Stack trace:
#0 /home/vmrm/public_html/szertar/zeittafel.php(611): date_create()
#1 {main}
thrown in /home/vmrm/public_html/szertar/zeittafel.php on line 611