I took a quick look at your feed file. Since I could not find any categories or play lists defined in your feed, I'll assume you've defined them in the developer portal. I did not, however, find an id that matches the message you are getting. There's a title with that string, but, not an id.

I've had more time to examine your feed file using the software I wrote.  It complained about several lines in your file.  There are about 58 errors and the majority say, for example:

Input string '29.97' is not a valid integer. Path 'series[0].episodes[0].content.videos[0].bitRate', line 1, position 523.

The 'bitrate' field is an integer.  You've used a 'float' for the value.  You've also got some empty json structures in your file.  While they may not cause a problem, they can only lead to confusion.