Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
Yes, the error you are encountering on your sitemap page, because there is a blank line added before the XML Sitemap’s source code.
Please follow this troubleshooting guide to fix that issue:
https://rankmath.com/kb/fix-sitemap-issues/#xml-text-declaration
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.