Yes I got an email from Google too about the AMP pages.
I looked up the line it refers to in the code. It’s to do with creating new arrays in the database. Quite why the error is being triggered though I’m not sure (yet).
It’s useful to know that pages other than the homepage aren’t affected.
Maybe it could be because the homepage doesn’t have a path and filename like the other pages do and the lack of this causes the problem? I’m not really sure. What are the main differences in this version of the plugin compared to the previous version.
Are you running https:// on your site too? Could that be the issue?
Turns out (although they were very similar paths), the path to the .png files was missing was missing /wp-content/, so I created a new folder, put the images in that new folder and it prevented the 404 errors.
