namespace prefix xhtml on link is not defined - sitemap.xml

Question

I am trying to add language to my sitemap.xml file, but I get a \"namespace prefix xhtml on link is not defined\" error. How do I defined it? I cannot find anything useful on go

Answer 1

This would do the work.

Change

Explanation

Define the xmlns:xhtml as given. Map the xmlns:xhtml to a place, where the schema is stored http://www.w3.org/2002/08/xhtml/xhtml1-strict.xsd.