Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.
Please follow these steps:
1. Update to the latest version of Rank Math
2. Ensure that the Advanced Mode is selected:

3. Re-create tables by clicking WP Dashboard > Rank Math > Status & Tools > Database Tools and click the Re-create database Table
button.

I hope that helps. Thank you, and looking forward to your update.
Hello Reinelle,
Thanks for the quick replay, I tried the same steps but no luck?
please suggests any other best way get remove that error?
Thanks in Advance.
Hello,
Thank you for following up.
Assuming you are using the latest version of all the plugins and the themes (please update if not yet), it would seem like a conflict with one of the plugins or the theme you are using.
To determine that, please follow this troubleshooting guide:
https://rankmath.com/kb/check-plugin-conflicts/
Only the site admin would know and your users won’t be affected by this troubleshooting.
If the issue persists, please record a video screencast using a tool like Loom showing the troubleshooting and edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
Please do take a complete backup of your website before sharing the information with us.
Thank you and, we really look forward to helping you.
I will try the above steps and update you by tomorrow.
I appreciate your time to look into this. Thank you!
Dear Reinelle,
please find the below screenshot – https://tinyurl.com/y37ecy7o
I’m getting the above error on the WordPress dashboard. I have uploaded the admin code on the sensitive section.
This is the Error I’m getting on dashboard
Notice: Trying to get property ‘total’ of non-object in …/wp-content/plugins/seo-by-rank-math/includes/modules/404-monitor/class-admin.php on line 206
Notice: Trying to get property ‘hits’ of non-object in …/wp-content/plugins/seo-by-rank-math/includes/modules/404-monitor/class-admin.php on line 213
I appreciate your time to look into this. Thanks a lot for your kind support!
Hello,
Please try disabling the 404 monitor in Rank math dashboard then enable it again. If the issue still persists, please share your WP an FTP access data as shown in the previous reply so we can look into this further from our end.
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.