It's a great idea that you decided to handle your routes in different controllers, it should've been the same case for the homepage route /. Just for the sake of consistency, create a handler called something like homepage.js and use it to handle the homepage just like you did with the rest.
https://github.com/GSG-G7/whats-going-on/blob/fd3f321bef92e1c97e6ad7c748c5f6a9d032e9ff/src/app.js#L14
It's a great idea that you decided to handle your routes in different controllers, it should've been the same case for the homepage route
/. Just for the sake of consistency, create a handler called something likehomepage.jsand use it to handle the homepage just like you did with the rest.