[Bug] Unable to subscribe to any channels

[nansan1]

Describe the bug
I am unable to subscribe to any channels via Invidious at this time. I was able to subscribe to one account before, but I am unable to recreate it for some reason. I will click the button and then it will unsubscribe me almost instantly.

Steps to Reproduce
Steps to reproduce the behavior:

1. Go to an Invidious instance.
2. Click on an instance (I used iv.ggtyler.dev and vid.puffyan.us).
3. Log in
4. Attempt to subscribe.
5. See error
   -->

Additional context
I attempted to subscribe on my phone with safari, on my laptop and via Yattee. None of them work.
-->

[Émilien (perso)]

Maybe tell us more details like the instance used (public or private)?

[gptlang]

Deleted or invalid channel

invidious/src/invidious/channels/channels.cr

Lines 158 to 176 in eda7444

 def fetch_channel(ucid, pull_all_videos : Bool) 
   LOGGER.debug("fetch_channel: #{ucid}") 
   LOGGER.trace("fetch_channel: #{ucid} : pull_all_videos = #{pull_all_videos}") 
  
   namespaces = { 
     "yt"      => "http://www.youtube.com/xml/schemas/2015", 
     "media"   => "http://search.yahoo.com/mrss/", 
     "default" => "http://www.w3.org/2005/Atom", 
   } 
  
   LOGGER.trace("fetch_channel: #{ucid} : Downloading RSS feed") 
   rss = YT_POOL.client &.get("/feeds/videos.xml?channel_id=#{ucid}").body 
   LOGGER.trace("fetch_channel: #{ucid} : Parsing RSS feed") 
   rss = XML.parse(rss) 
  
   author = rss.xpath_node("//default:feed/default:title", namespaces) 
   if !author 
     raise InfoException.new("Deleted or invalid channel") 
   end 

https://www.youtube.com/feeds/videos.xml?channel_id=UCOmCxjmeQrkB5GmCEssbvxg ->

But it was present in the wayback machine:
https://web.archive.org/web/20231031161101/https://www.youtube.com/feeds/videos.xml?channel_id=UCOmCxjmeQrkB5GmCEssbvxg

Instance: https://iv.duti.dev/ (My own)

[gptlang]

I see references to it being removed from a few months back: https://news.ycombinator.com/item?id=39179446

Why is this issue only popping up now?

Edit: Now that I read through the comments more carefully, it was restored. It seems they removed it again the second time

[nansan1]

Maybe tell us more details like the instance used (public or private)?

Updated

[nansan1]

It looks like it was restored somehow. I will close this now.

[Chris Bailey]

I'm running into this again on my instance. Sample RSS URL, though I've tried with a few and they all have the same issue: https://www.youtube.com/feeds/videos.xml?channel_id=UCy0tKL1T7wFoYcxCe0xjN6Q