Comment by Alok Deshwal on "Whenever I run my app.js, it says
throw err;
Cannot find module 'session'.
What's wrong with using express-session and connect-flash packages in node js?
Is there any alternative solution to this problem?" | Hashnode
As error itself defines, express-session isn't installed. First install all required modules you have included in your app.js file and try again.
Hopefully it should get resolved.