Hello
Thanks for contacting Rank Math, and sorry for any inconvenience that might have been caused due to that.
The console error you received is coming from an extension and if this error really does affect the saving process of your meta, please try saving it in an incognito tab or in a different browser that has no extensions.
You may also follow the steps mentioned in the guide below to see if that resolves the issue for you: https://rankmath.com/kb/meta-data-not-saving/
If you need further assistance, please don’t hesitate to contact us.
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.