Error message from photon.php
On my blog, on the web browser, in public view, I get a mysterious error from a particular post which consists of 4 .PNG graphics:
Warning: (pjk) array_key_exists(): The first argument should be either a string or an integer in /afs/athena.mit.edu/user/p/j/pjk/web_scripts/pkj/wp-content/plugins/jetpack/modules/photon.php on line 183
That occurs four times at the top of the post, just below the title. Any ideas what is causing that error?
The web page is located at: http://pjk.scripts.mit.edu/pkj/
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