403. That’s an error.

Your client does not have permission to get URL /api/manifest/dash/expire/1575843663/ei/7yLtXcLAG-mL2LYPgbyAkAM/ip/107.172.45.225/id/fc45cb9122894954/source/youtube/requiressl/yes/playback_host/r3---sn-p5qs7nel.googlevideo.com/mm/31%2C26/mn/sn-p5qs7nel%2Csn-vgqsrnez/ms/au%2Conr/mv/m/mvi/2/pl/23/tx/23813227/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/initcwndbps/677500/mt/1575821993/fvip/3/fexp/23842630/beids/9466588/itag/0/sparams/expire%2Cei%2Cip%2Cid%2Csource%2Crequiressl%2Ctx%2Ctxs%2Chfr%2Cas%2Citag/sig/ALgxI2wwRQIgHcGUCn8188X2Qr1KomEpzKB_vFUi9ReXRwnXuw0Pi7kCIQDcy32MUxEc26QOarq4KyTH4UzjmDXKjGfhsU6hwXZ_1Q%3D%3D/lsparams/playback_host%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps/lsig/AHylml4wRAIgSpIDd96WmaafCNkJGboKwbxiDxizHc1aoCW_t90ofGQCIHVQC5acZTMI4rdnZ3ZazFZWlZmp13W7s55E5UGlfBEz from this server. That’s all we know.