XML declaration allowed only at the start of the document

Hello,

We’ve checked your sitemap and the xml tag is missing there which is creating a blank line.

If you don’t have any issues in your wp-config.php or functions.php file then 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/

Here is a video you can follow as well:

Only the site admin would know and your users won’t be affected by this troubleshooting.

If the issue persists, please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.

Please do take a complete backup of your website before sharing the information with us.

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/

Looking forward to helping you.

Thank you.

Hello,

We’ve checked your sitemap, and it seems to be working fine now. Please refer to the screenshot attached in the sensitive data section.

If it’s still not showing on your end, try clearing your website and browser’s cache.

Let us know how this goes.

Thank you.