Authentication Cookie Does Not Work

[AoiNymph]

Describe the bug
Fetching an auth cookie and adding it to the .env file renders the bot unable to play streams, or autofill in the slash command for matching videos/songs. Without an auth cookie, the autofilling works, however playing is still not possible. This behaviour started roughly ~3 weeks ago.

Additional info
The log contains nothing useful when the bot attempts playing a song with the auth cookie present. The last line is simply the "Ready! Logged in as xxx"

Discord responses with an auth cookie

Without an auth cookie

[DikshantJangra]

I'm willing to work on this issue, do assign it to me.