Fatal error: Uncaught Exception: DateInterval::__construct(): Unknown or bad format () in /htdocs/api/index.php:24 Stack trace: #0 /htdocs/api/index.php(24): DateInterval->__construct('') #1 /htdocs/related_video.php(50): dateIntervalToHumanString(NULL) #2 {main} thrown in /htdocs/api/index.php on line 24