Response too large

#1

Getting the error message “Fetching the page failed because the response is too large.” in the card validator for this page http://christophercooper.com.au/letters/regarding-prayer-flags/

The .jpg image is only 97kb which comes in under the recommended 1MB https://dev.twitter.com/docs/cards/markup-reference

The card meta tags are:

Any thoughts on this one?

Thanks

#2

What’s too big is not your image but the page itself (it’s over 1MB).
Looking at the source code, most of your page seems to be a debug log generated by “W3 Total Cache”