url: https://movieguide.netlify.com/
You need to create the necessary API to enable app to work:
Sign Up for an account with 'The Movie Database.'
Once you are logged in you can go to settings -> api and create an api application.
The Movie Database API Documentation
Copy the api_key and paste it in your .env file. It should look like this:
API_KEY=XXXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX