If you’re using YOAST SEO, get the YOAST GLUE plugin for AMP, which seems to help fix that.
Thanks for your suggestion.
Unfortunately, I’m not using the YOAST SEO plugin. Anything else I can try?
You can either set a featured image for the post or upload an attachment to the post (do not have to insert into content).
Thank you Mohammad.
Isn’t there anyway to make the current in-body images good for AMP without editing the articles? Because we have over 6,000 published articles, and it’s really hard to get them working using this method.
You could use the metadata filter and add the image through that: https://github.com/Automattic/amp-wp/blob/master/readme.md#schemaorg-json-metadata (the example shows logo, but you could insert the [image] key instead of the ['publisher']['logo'])
I have the same problem, I tried to fix it, myself, but I can not.
I have installed the plugin Yoast GLUE, but the error does not disappear.
Attached image with error. image with error:
View post on imgur.com
Here you can see my page with the error: https://developers.google.com/structured-data/testing-tool/?url=http%3A%2F%2Fwww.roc21.com%2F2015%2F07%2F28%2Fdibujos-realistas-utilizando-carboncillo%2Famp%2F
thanks for all the work you do!