Images Missing from Summary Card


#1

I implemented Card earlier today and they worked beautifully, I posted about 4 cards. When I went to do some more a few hours later the photo does not display. You can see an example here
https://twitter.com/Books_n_writers
I am calling the images from my database so the URL has not changed. One image for a childrens book still displays correctly.
The validator says everything is fine, but it also shows a grey box where the image should be,
If I put java console on I see the following

Failed to load resource: net::ERR_CACHE_MISS

I also see
Refused to load the image ‘https://www.google.co.za/ads/ga-audienc’ because it violates the following Content Security Policy directive: “img-src ‘self’ https://*.twimg.com https://twitter.com and other links:”

I’m not sure where that google thing comes in as my tags are as follows

The parameter for book_1 would translate to a number such as http://www.bookwormsandwriters.com/apex/f?p=144:32:0::NO::P32_BOOK:12785

The link works and so does the text, its just the gray image instead of the book cover displaying.

Thank you in advance