I open VRChat and on any video player, any twitch stream, tested with different users and 'Twitch DJs' at events. I get this exact same error, just different username.
[twitch:stream] bobross: Failed to download m3u8 information: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1131) (caused by CertificateVerifyError('[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1131)')); please report this issue on https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using yt-dlp -U
I've Updated Windows, Reverted GPU drivers, applied optional window updates, installed new and updated Certificates, Network Reset, Restarted the Router/Modem, uninstall and reinstalled SteamVR, VRChat, and opted in and out of both of their betas. Haven't been able to find a resolution to this current issue. It began around October 5th.