Error 500 on some videos and channels

[Quentin Franchi]

Describe the Bug

Some videos and channels doesn't load and returns an error 500.

A weird case for the channels is that it can sometimes load when clicking on links from search or on the channel link from a video page.
For a video, it doesn't load at all.

Steps to Reproduce the Bug

For a video:

1. Go to Yakuza 0 - Majima Trailer | PS4
2. See the error

For a channel:

1. Go to Deebeegeek channel
   It might requires a few page reload.
2. See the error

Expected Behaviour

Shows the video or channel page.

Screenshot/Screen recording

For a video:

For a channel:

Device Info

• Device: PC
• OS: Arch Linux
• Browser: Firefox
• Version: 0.15.3

Additional Context

Could this be related to #2740?

[theselfhostingart]

Looks like it happens specifically on age restricted videos

[Mo]

There are two issues here:

• Channels are unreliable at the moment, because YouTube changed some things
  • Fix is coming sometime soon
• Age restricted videos can sometimes not be played
  • I added a message if a video is age-restricted: #2847