Quoting primevideo/mytv

There are scores of Amazon error codes you could run into when streaming Amazon Prime Video, and the error messages aren't necessarily that helpful when it comes to figuring out exactly the problem. For the large part, Amazon error codes signify that a specific type of problem, such as internet connectivity, hardware problems, and software issues.
https://sites.google.com/view/www-primevideo-commytv/
https://sites.google.com/view/url-amazon-commytv/
https://sites.google.com/view/url-amazon-mytvcode/
https://sites.google.com/view/amazoncommytvcodeactivate/
https://sites.google.com/view/amazoncomuscode/