It works if I delate this part of code for example in "com_jem\views\venue\view.html.php"
Code:
// Add feed links
$link = '&format=feed&id='.$venue->id.'&limitstart=';
$attribs = array('type' => 'application/rss+xml', 'title' => 'RSS 2.0');
$this->document->addHeadLink(JRoute::_($link . '&type=rss'), 'alternate', 'rel', $attribs);
$attribs = array('type' => 'application/atom+xml', 'title' => 'Atom 1.0');
$this->document->addHeadLink(JRoute::_($link . '&type=atom'), 'alternate', 'rel', $attribs);
but it won't works as override in "template\html\com_jem\views\venue\"
