"unsopported content" error with supported content

[Colliewolf]

Hello! I'm having an issue with getting the discs to work. Despite having the proper links to soundcloud songs - i even checked by sending a friend the exact same link and having it work for them - I still get the Invalid URL message and the message "Unsupported Content-Type: text/html; charset=utf-8"

This is the exact link I used that was able to be used by my friends account.

https://m.soundcloud.com/mothercain/ptolemaea

I reinstalled the mod, restarted minecraft and everything. I would just like to be able to use the mod.
Is there anyway I can fix it?