We recommend starting here to troubleshoot channel issues: Follow these steps in order: 1. Navigate to the channel tile on the Roku home screen, press the * key on your remote, and choose 'Remove channel'. 2. Next, restart your device from Settings>System>System restart. (For Roku TV Settings>System>Power>System restart) 3. Once your player/TV starts up again, go to 'StreamingChannels' on the Home screen, and add the channel back once more. You may also refer to this link: How to resolve a channel playback issue | Official Roku Support
Does this clear up the issue you are seeing? Please keep us posted.
I'm having the same issue with UFC I was able to watch one live video then went onto the next and having the Roku native Player error code 3 come up. This happened 2 weeks ago so I did a factory reset and it fixed the problem. I've tried the above and that didn't work so I also did a factory rest and I'm still getting the error. Thanks
Try removing the channel from the Roku home screen by navigating to the channel tile, pressing the * key on your remote and choosing 'Remove channel'. Then restart your device from Settings>System>System restart. Once your player starts up again, add the channel back once more.
Does this clear up the issue you are seeing? Please keep us posted what you find out.
If removing the channel and adding it back after you've restarted the device does not resolve the channel issue, I'd recommend reaching out to channel support directly to report the issue and request additional support. Many channels on the Roku platform are developed and maintained by the channel provider directly, and they'll be able to best assist. If other channels are working correctly, and you only experience this issue on that channel (app), that is likely an indication that the issue lies within that particular channel. In these cases, the channel provider will need to investigate the issue in order to help resolve it.