Remove autoReconnect: it is true by default

server/middlewares/sessions.js

@@ -9,9 +9,6 @@ export default function sessionsMiddleware() {
     resave: true,
     saveUninitialized: true,
     secret: secrets.sessionSecret,
-    store: new MongoStore({
+    store: new MongoStore({ url: secrets.db })
-      url: secrets.db,
-      'autoReconnect': true
-    })
   });
 }