I have the same problem. My warning is Warning: Division by zero in /home/wahmaddi/public_html/wp-content/plugins/wordpress-seo/inc/class-wpseo-image-utils.php on line 223
When I deactivate the Yoast Plugin, it goes away, but when reactivated, it reappears.
I have 1. WordPress version – 4.9.5 2. PHP version – 7.0.29.
This started when I updated 2 pages on my website: https://www.wahmaddicts.com/
It happens regardless if signed in as admin or not.
Please advise. Thank you!
