403. That’s an error.

Your client does not have permission to get URL /api/manifest/dash/expire/1623675525/ei/Jf7GYMC1LoGl1wLhxY_YAg/ip/179.61.145.44/id/d1081bd61accf716/source/youtube/requiressl/yes/playback_host/r4---sn-1gi7znes.googlevideo.com/mh/5x/mm/31%2C26/mn/sn-1gi7znes%2Csn-i5h7lnll/ms/au%2Conr/mv/m/mvi/4/pl/20/tx/24034800/txs/24034799%2C24034800%2C24034801%2C24034802/hfr/all/as/fmp4_audio_clear%2Cwebm_audio_clear%2Cwebm2_audio_clear%2Cfmp4_sd_hd_clear%2Cwebm2_sd_hd_clear/initcwndbps/73750/vprv/1/mt/1623653557/fvip/2/keepalive/yes/fexp/24001373%2C24007246/beids/23886210/itag/0/sparams/expire%2Cei%2Cip%2Cid%2Csource%2Crequiressl%2Ctx%2Ctxs%2Chfr%2Cas%2Cvprv%2Citag/sig/AOq0QJ8wRQIgWiid5G1JPckdw8dqNl-5GnXswoyc4hWXNIJfTB5Wm38CIQDgMTMbfCnPLHiOdP1wnd7VRPXqxwCNr3MG1q0w5ZQ4NA%3D%3D/lsparams/playback_host%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps/lsig/AG3C_xAwRgIhAKuGj_PkHtDmXfBkQS6wiLsxHAvM7jBFga81vh7pxulMAiEAsOWCkry80PeQnZlXSnqhbSFBJsow1b8qGVOkGV1oklo%3D from this server. That’s all we know.