403. That’s an error.

Your client does not have permission to get URL /api/manifest/dash/expire/1574369064/ei/yKLWXcaTBZSphwb5nqvwCQ/ip/107.173.179.5/id/0f2ea265e6a42d0e/source/youtube/requiressl/yes/playback_host/r6---sn-ab5l6nsk.googlevideo.com/mm/31%2C29/mn/sn-ab5l6nsk%2Csn-ab5szn7r/ms/au%2Crdu/mv/u/mvi/5/pl/24/tx/23813231/txs/23813225%2C23813226%2C23813227%2C23813228%2C23813229%2C23813230%2C23813231/hfr/all/as/fmp4_audio_clear%2Cwebm_audio_clear%2Cwebm2_audio_clear%2Cfmp4_sd_hd_clear%2Cwebm2_sd_hd_clear/mt/1574346724/fvip/6/fexp/23842630%2C23860863/itag/0/sparams/expire%2Cei%2Cip%2Cid%2Csource%2Crequiressl%2Ctx%2Ctxs%2Chfr%2Cas%2Citag/sig/ALgxI2wwRgIhANVJfeBwAb7j6VqhQQkWVs1qTkXrDWP-EKlK4VW9cKOAAiEAtgOj2vlwlrDQ3ie0aVFXznz8rLao6xyz1OWPTdhAovU%3D/lsparams/playback_host%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl/lsig/AHylml4wRQIgWCEA4pw0lWcSN49_EAsLaPaWxXfxIJgYjHo5Kfm51eECIQCz00e9bwwseZRCOG6N2dGbShPjyZ9YqBgJMpBNF3zqzA%3D%3D from this server. That’s all we know.