Awhile back, SomaFM changed how they handled HTTP/HTTPS when it comes to playlist files. Basically, if the player requests a PLS file using an HTTP link (I.E. http://api.somafm.com/christmas.pls), than the individual links within the file will be HTTP links, and vice versa.
This is a very logical change, but it actually broke my script depending on which OS/player you were using. Now that Remoticon is over and I've had some free time to get back to it, I've gone through and standardized everything to use HTTP other than the initial call for the channels.json. I know this seems counterproductive in 2021, but unfortunately, most of the command line players I'm using for the backend of this script don't support HTTPS streams.
So if you ran the script within the last couple of weeks and it just failed silently, give the latest version on GitHub a try and see if it fixes things.