Hello,
We apologize for the issue you are facing with your sitemap. The error messages you are encountering indicate that your site has exhausted the allowed memory limit. To resolve this, you may need to increase the PHP memory limit on your server.
Here are the steps you can take:
-
Check Your Current Memory Limit: You can check your current PHP memory limit by navigating to Tools → Site Health → Info in your WordPress dashboard and looking under the Server section.

-
Increase PHP Memory Limit: If your current memory limit is lower than 512M, consider contacting your web host to increase it. You can request an upgrade to a higher hosting plan if necessary.
-
Flush Permalinks: Sometimes, flushing permalinks can help. Go to Settings → Permalinks in your WordPress admin area and click the “Save Changes” button without making any changes.

If you continue to experience issues after trying these steps, please reply to this ticket, and a human agent from the Rank Math Support team will assist you further. Thank you for raising this concern!
Sources:
Rank Math Sitemap Issues and Their Fixes » Rank Math
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
The error messages you shared mean that the server resources on the server are getting exhausted.
The only way around this issue is to increase the server memory for the full functionality of the plugin to be able to run on the website.
We recommend getting in touch with your web host and asking them to set at least the following values to make sure that all functionality can run consistently:
PHP Memory Limit: 512M
Max input time: 150
PHP time limit: 120
PHP max input variables: 1000
Let us know how it goes. 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.