Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, false given in /var/home/utc-donnerskirchen_at/www/kalender/kalender.php:24 Stack trace: #0 /var/home/utc-donnerskirchen_at/www/kalender/kalender.php(24): implode('', false) #1 {main} thrown in /var/home/utc-donnerskirchen_at/www/kalender/kalender.php on line 24