Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
I am not sure where you are seeing this error is this on the backend?
I have checked a few pages on your site and the set meta description is visible on the page source as shown below:
Looking forward to helping you. Thank 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.