Page not found (404)

Request Method: GET
Request URL: https://mjcmauguiocarnon.herokuapp.com/activities/Chant%2520et%2520Musique
Raised by: activities.views.get_list_of_animations

No Activity_Animation_Type matches the given query.

You're seeing this error because you have DEBUG = True in your Django settings file. Change that to False, and Django will display a standard 404 page.