Start by performing a "System restart" from Settings->System. You should also restart all of your network equipment - gateway/modem/router. It's hard to say what that error code is, but it could be that it's having a problem reaching Criterion's server. Are you having trouble streaming anything else on other apps?
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.