This not error, this required for youtube keep play without throw you out.

Called SABR (Server ABR), probably attempt to stop scrape or download or alternative client.

The devs are aware of this

IIRC they said that SABR is slowly being rolled out and DASH phased out. instead of waiting they decided to tackle this head on. I'm 50/50 having no problems for a few videos then getting stuck in this trap.

My solution is to use a dedicated profile in Librewolf to watch youtube. I've also got this setup on Brave just encase.

I bookmarked all my Pipepipe subscribes and installed Sponsorblock. I have all the channels in my RSS reader so i know who has a new video.

Librewolf clears all browsing data on exit. I did encounter a captcha but closing the browser and changing vpn location took care of that.

I'm keeping pipepipe installed for now on Android encase they come up with a fix.

I did try Freetube on Fedora but during the second day, it refused to play anything. Ft seldom worked for me but I was hoping the app improved since I last used it.

Edit: after two days my browser solution is working good. I do miss being able to block channels like I can with a frontend. Oh well. Can't have everything.