Fatal error: Uncaught TypeError: mktime(): Argument #6 ($year) must be of type ?int, string given in /mnt/web522/b2/63/510398863/htdocs/zeltplatz/lib/classes/artikel_class.php:1382
Stack trace:
#0 /mnt/web522/b2/63/510398863/htdocs/zeltplatz/lib/classes/artikel_class.php(1382): mktime()
#1 /mnt/web522/b2/63/510398863/htdocs/zeltplatz/lib/classes/artikel_class.php(1088): artikel_class->get_anzahl()
#2 /mnt/web522/b2/63/510398863/htdocs/zeltplatz/lib/classes/artikel_class.php(119): artikel_class->check_artikel()
#3 /mnt/web522/b2/63/510398863/htdocs/zeltplatz/all_inc_front.php(64): artikel_class->make_inhalt()
#4 /mnt/web522/b2/63/510398863/htdocs/zeltplatz/index.php(17): require_once('...')
#5 {main}
  thrown in /mnt/web522/b2/63/510398863/htdocs/zeltplatz/lib/classes/artikel_class.php on line 1382