Hello,
Thanks for contacting us and sorry for any inconvenience that might have been caused due to that.
This error happens when a featured thumbnail doesn’t exist on your posts/pages.
However, we released a quick Beta update you can try to see if that helps.
https://rankmath.com/changelog/#beta
To enable Beta update please head over to Rank Math > Status and Tools > Version Control
https://rankmath.com/kb/version-control/#beta-updates
Please update Rank Math to the latest beta version and let us know if the issue persists.
Looking forward to helping you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.
