I have been trying to validate a website with W3C, doctype and encoding on autodetection. I've used a functional link to an article on that website.
The errors reported were
1.) Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
for <?xml version="1.0" encoding="utf-8"?>
2.) several missing tags or stray start tags...
I have no idea how to fix all of these. The missing start tags do NOT come from the article itself, that much is clear to me.
Grateful for any hints that can be given.
Other than the information below (links), let me know what files (index.php? TemplateDetails.xml?) would be needed for you to help me.
The link tested is: