Recently, I found the AMP page of this blog is not working. After checking the web logĀ  error file, the error looks like below If you Google it with wp-content/plugins/glue-for-yoast-seo-amp/classes/class-frontend.php:162 A lot of search results with the same problem. Based on the Yoast SEO support page, it said it is AMP plugin fault. gooma2 provided