Hello,
Thank you for contacting Rank Math support, and sorry for any inconvenience that might have been caused due to that.
Kindly refer to this guide to address this issue: https://rankmath.com/kb/zero-search-traffic-error/
The fetching process will initiate once again.
If the issue persists, please try to manually run the rank_math/analytics/data_fetch scheduled action and wait for the data fetch to complete.

You can access this page in your WordPress Dashboard > Tools > Scheduled actions or here: http://your-domain.com/wp-admin/tools.php?page=action-scheduler
You can check the progress at Rank Math > Analytics.
Let us know how that goes. 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.