ERROR en el fetch_feed: https://www.mozilla-hispano.org/foro/feed.php?f=44 A feed could not be found at https://www.mozilla-hispano.org/foro/feed.php?f=44. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.