I am good at asking questions about tech problems
My Samsung smart TV is saying We are having problems playing this right now. Please try again later.
gonerd.co.nz expert / coder / loves to run
This is an error on some Samsung TVs caused by not properly exiting the app and then going back into it. You can resolve it by fully exiting the Spark Sport TV app and then relaunching it.
It seems Spark are aware of this issue and have mentioned it in this post: