Hey Chezal and Les
You guys do realise you both have said so little in your posts there's nothing to go on that can suggest a fix.
If you both have nothing more to put forward then contact Now TV on the following email:
You may have better luck with your queries.
I am getting error PL-0 aswell on xbox one X in the now tv app alot today when streaming any channel movies and entertainment, not been able to stream a full movie without it erroring end kicking me off live stream.
Its a Wired connection, app up to date, internet is running fine and internet speed is more than enough to the xbox (testing 37mbps download speed).
Had a look online to find what this code means but can't seem to see anything.