Please follow the below template, it will help us to help you!
Go to Stern.de, click on a video, video plays
Go to Stern.de, click on a video, Video does not play
Either nothing happens and the video just sits there without playing or there is an error message:
Error Code: MEDIA_ERR_UNKNOWN
Session ID: 2018-07-12:9dc68c768a81e976afd2e922 Player Element ID:video_videoPlayer12854
I am not sure which link I need to whitelist. How can I find this out?