Issue: Call to undefined method vw_URL_Model_XF::paths_equal()

Error Info
Error: Call to undefined method vw_URL_Model_XF::paths_equal() - library/vw/XenForo/Route/Prefix/vw.php:200 
Generated By: Unknown Account, 1 minute ago
Stack Trace
#0 /library/vw/XenForo/Route/Prefix/vw.php(90): vw_XenForo_Route_Prefix_vw->isInWikiRoute('chat/refresh', false)
#1 /library/XenForo/Router.php(72): vw_XenForo_Route_Prefix_vw->match('chat/refresh', Object(Zend_Controller_Request_Http), Object(XenForo_Router))
#2 /library/XenForo/Dependencies/Abstract.php(107): XenForo_Router->match(Object(Zend_Controller_Request_Http), 'chat/refresh')
#3 /library/XenForo/FrontController.php(289): XenForo_Dependencies_Abstract->route(Object(Zend_Controller_Request_Http), NULL)
#4 /library/XenForo/FrontController.php(130): XenForo_FrontController->route()
#5 /index.php(13): XenForo_FrontController->run()
#6 {main}
Request State
array(3) {
  ["url"] => string(62) "https://site.com/index.php?chat/refresh"
  ["_GET"] => array(1) {
    ["chat/refresh"] => string(0) ""
  }
  ["_POST"] => array(15) {
    ["room_id"] => string(1) "0"
    ["user_rooms"] => array(1) {
      [0] => string(3) "511"
    }
    ["last_id"] => string(3) "511"
    ["activity_last_update"] => string(10) "1476055387"
    ["users_last_update"] => string(10) "1476055387"
    ["inverse"] => string(1) "0"
    ["hide_bot"] => string(1) "0"
    ["no_users"] => string(1) "0"
    ["show_ignored"] => string(1) "0"
    ["all_pages"] => string(1) "1"
    ["loading"] => string(1) "0"
    ["_xfRequestUri"] => string(60) /groups/pain-management-and-chronic-pain.91/cover"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["_xfResponseType"] => string(4) "json"
  }
}