Issue downloading HTTP error 403 Forbidden Unable to open key file

Hi when I try to download a video(in a private site) i Get this error

Quote:

[https @ 000000000067e6e0] HTTP error 403 Forbidden
Unable to open key file https://videos.ed.team/key.php?cours...desde-cero-1-1
[hls,applehttp @ 0000000000677160] Error when loading first segment 'https://s3.amazonaws.com/edteam/hls_videos/drupal-desde-cero/drupal-desde-cero-1-1/drupal-desde-cero-1-1_0.ts'
https://s3.amazonaws.com/edteam/hls_...ero-1-1_.m3u8: Invalid data found when processing input

I can download the m3u8 file but I dont know how to get the private key.
the url of file its

Code:

https://s3.amazonaws.com/edteam/hls_videos/drupal-desde-cero/drupal-desde-cero-1-4/drupal-desde-cero-1-4_.m3u8