XML Parse Error - Extra content at the end of the document

Question

I am trying to give the option to get either a JSON or XML response.

JSON works fine but when I view the XML, I get an error.

http://lmsapi.com/?api_key=fba9

Answer 1

Make sure you also triple check for a duplicate urlset declaration at the top of your document. This was my problem. It was a very careless oversight.