Deployed Heroku app only works after refreshing (Node.js, Express.js, Jquery, Css, Html, TMDB API)

I have an app that allows you to search for movies and tv shows using The Movie Database API. The app is fully functional on Heroku after refreshing the page. By any chance is there a way to speed up the app and allow it to function without the initial refresh.

Heroku app - https://the-cinematic-app.herokuapp.com/

Github repository - https://github.com/kimanikelly/Cinematic