Disable service worker

server/server.js

@@ -76,9 +76,12 @@ app.prepare().then(() => {
   server.get('/verify/:verificationToken?', catchErrors(auth.verify), (req, res) =>
     app.render(req, res, '/verify', req.user)
   );
-  server.get('/sw.js', (_req, res) => {
-    res.sendFile(`${__dirname}/offline/sw.js`);
-  });
+
+  // Disabled service worker because of multiple requests
+  // Resulting in duplicated visist count
+  // server.get('/sw.js', (_req, res) => {
+  //   res.sendFile(`${__dirname}/offline/sw.js`);
+  // });
 
   /* User and authentication */
   server.post('/api/auth/signup', validationCriterias, validateBody, catchErrors(auth.signup));