Error code TVAPP-00148

I called Xfinity technical support. And I agree, it was like talking to the wall. I have absolutely no satisfaction. They cannot tell me what that error code means. I'm not sure how tech savvy these people are, but apparently they're not. I'm going to follow the suggestion of going and using my phone. I have a Samsung TV upstairs that's shooting off the error code, but my LG TV downstairs works perfectly fine. Thanks to the person that suggested streaming from my phone using Bluetooth. I again appreciate everyone that has gave an input on this. I see they've had this problem for more than 3 years. There are comments from 3 years ago about the same error code. You're telling me they can't find a problem with this? I'm not understanding that but I don't work there so. And I don't want to pay $10 a month for a box either.