Please follow the steps below to resolve this error:

1. On both your Roku player and your TV or receiver, unplug each end of the HDMI connectors. 

2. Unplug the TV and the Roku player for 30 seconds. 

3. Reconnect both ends of the HDMI cord, pushing them firmly, all the way in.

4. Plug in the TV and Roku player.

5. Try viewing the video again.