Auth0 Integration With Heroku

I am not using the Auth0 add on. The app launches and functions fine, but when clicking the auth0 login button I am redirected to a page that looks like this Screenshot - 6b153ab19cb81bda1c08699b0e9b5694 - Gyazo. This error only appears on Heroku, and when I run locally I am properly redirected to the Auth0 login page.