I have used the yoast SEO plugin for sitemap generating when I submit the URL of the sitemap_index.xml file to google search console it says “Your Sitemap appears to be an HTML page. Please use a supported sitemap format instead”
I also try multiple online sitemap generaters but these also show the same errors.
The sitemap file is 100% XML but don’t know show this error. please help me to fine solution.
My website sitemap URL is - http://genius81.epizy.com/sitemap_index.xml
Thanks