showSurvey : function() {
    if (this.cookieData.hash && this.hasSurvey == true && this.surveyShown == false){
        var locationCurrent = encodeURIComponent(window.location.href.substring(window.location.protocol.length));
        this.surveyShown = true;
        document.getElementById('<br />
<b>Warning</b>:  Undefined variable $chatCSSPrefix in <b>/www/cadena24.net/cadena24.net/public/livehelperchat-master/lhc_web/design/defaulttheme/tpl/lhchat/getstatus/functions/part/show_survey_page.tpl.php</b> on line <b>5</b><br />
_iframe_page').contentWindow.location.replace("<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;erLhcoreClassSystem&quot; not found in /www/cadena24.net/cadena24.net/public/livehelperchat-master/lhc_web/design/defaulttheme/tpl/lhchat/getstatus/functions/part/show_survey_page.tpl.php:5
Stack trace:
#0 {main}
  thrown in <b>/www/cadena24.net/cadena24.net/public/livehelperchat-master/lhc_web/design/defaulttheme/tpl/lhchat/getstatus/functions/part/show_survey_page.tpl.php</b> on line <b>5</b><br />