Fatal error: Uncaught TypeError: gregoriantojd(): Argument #3 ($year) must be of type int, string given in /home2/alpenwi1/public_html/includes/functions.php:206 Stack trace: #0 /home2/alpenwi1/public_html/includes/functions.php(206): gregoriantojd(NULL, NULL, '') #1 /home2/alpenwi1/public_html/trip_overview.php(25): dateDiff('-', NULL, NULL) #2 {main} thrown in /home2/alpenwi1/public_html/includes/functions.php on line 206