Uncaught TypeError: cjs.MovieClip is not a constructor

Hi

I've created an interactive infographic in Animate which works fine when I test the movie in a web browser and when ipublish the OAM file in Indesign. However I can't get it to work on my website. 

I've copied the js code into my website the infographic doesn't render (no images appear) and I get the following error: Uncaught TypeError: cjs.MovieClip is not a constructor.

Uncaught TypeError: cjs.MovieClip is not a constructor
    at digestivesystem:1350:20
    at digestivesystem:3153:3

Would anyone have any advice as to how to fix this?

Thanks in advcance

Ellen