could not fetch sitemap

Hello,

Thanks for contacting us, and sorry for any inconvenience that might have been caused due to that.

Can you please follow the steps mentioned in the guide below? This should help you to figure out and resolve the issue.
https://rankmath.com/kb/couldnt-fetch-error-google-search-console/

Note: after applying the fix, please try re-submitting your sitemap to GSC to see if that’s working.

Looking forward to helping you.

Thank you.

Hello,

We’ve checked your sitemap with https://httpstatus.io/, and we can see all the variations of the sitemap URLs are returning 200 status.

Please note that only one of the 4 variations should show a 200 status code and the 3 remaining ones should show 301. If you’re not sure how to redirect these URLs then you can get in touch with your hosting provider.

Once done, please clear your website cache and submit the sitemap again to your Google Search Console.

If the issue still persists, you can try to submit /?sitemap=1 on your GSC and see if that works for you.

Let us know how it goes. Looking forward to helping you.

Thank you.