Page not found (404)

Request Method: GET
Request URL: https://www.arcsproject.org/project/c%25C3%25A2ntec-de-leagan/
Raised by: projects.views.projects.ProjectDetailView

No project found matching the 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.