Merge branch 'hotfix/module-locator-events-presence' into release

src/Listener/LocatorRegistrationListener.php

@@ -67,6 +67,10 @@ public function onLoadModulesPost(Event $e)
         $moduleManager = $e->getTarget();
         $events        = $moduleManager->getEventManager()->getSharedManager();
 
+        if (!$events) {
+            return;
+        }
+
         // Shared instance for module manager
         $events->attach('Zend\Mvc\Application', MvcEvent::EVENT_BOOTSTRAP, function ($e) use ($moduleManager) {
             $moduleClassName = get_class($moduleManager);