I saw this error

Hello,

Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.

Could you please confirm if you’re using Elementor Templates? If so, it is expected since Elementor templates are actually non-objects in the WordPress scope, so the default WordPress function we use (get_queried_object()) returns null and this notice shows on those pages.

In terms of functionality, this won’t have any impact and the messages can be disabled from appearing on the pages directly by setting the display in the error log to be just the file with the following directive:

define( 'WP_DEBUG_DISPLAY', false );

Hope that helps and please don’t hesitate to let us know if you have any other questions.
 
Thank you.

Hello,

We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.

If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.

If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.

Thank you.