Added status code 500 for generic error message.

server.js

@@ -25,11 +25,11 @@ app.get('/about', (req, res) => {
 app.use(apiRoutes);
 
 app.use((err, req, res) => {
-  res.send({
+  res.status(500).send({
     ok: false,
     error: 'Unexpected server error',
   });
 })
 
 app.listen(port);
-console.log(`Serving at http://localhost:${port}`);
+console.log(`Serving at http://localhost:${port}`);