Page not found (404)

Request Method: GET
Request URL: https://ewww.kumamoto-u.ac.jp/en/centers/centers/policy/

Not found (extra_path u'/policy/' on <Page: Inter-Department Institutes for … ion and Research>)

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.