Local rss-feed from file

I am trying to let the rss-feed show a local rss-xml-file, according to this post it should work with entering this as feed location:

file:///home/osmc/rssdata.xml

this is the content of the rssdata.xml file:

<?xml version="1.0" encoding="UTF-8" ?>
  <rss version="2.0">
    <channel>
      <item>
         <title>Example entry</title>
         <description>Here is some text containing an interesting description.</description>
       </item>
     </channel>
   </rss>

However, it is not working. is the file:// option not longer supported, am I missing something?

Try this file: /home/osmc/.kodi/userdata/RssFeeds.xml