Issue: ErrorException: Fatal Error: vw_XenForo_CodeEventListener::init(): Failed opening required

ErrorException: Fatal Error: vw_XenForo_CodeEventListener::init(): Failed opening required '/vault/core/model/vw.php' (include_path='/library:.:.:/usr/local/lsws/lsphp7/lib/php') - library/vw/XenForo/CodeEventListener.php:87
Generated By: Unknown Account, Today at 6:30 PM
Stack Trace

#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}

Request State

array(3) {
  ["url"] => string(66) "https://site.com/index.php?recent-activity/"
  ["_GET"] => array(1) {
    ["recent-activity/"] => string(0) ""
  }
  ["_POST"] => array(7) {
    ["live_feed"] => string(3) "260"
    ["referer"] => string(16) "recent-activity/"
    ["source"] => string(5) "forum"
    ["_xfRequestUri"] => string(19) "/forums/"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["_xfResponseType"] => string(4) "json"
  }
}