Page not found (404)

Request Method: GET
Request URL: https://www.kontinent.ru/product/stepler-max-53-s-regulirovkoi-sily-udara-metal-korpus-dlia-tonkoiskoby-tip-53-4-14-mm-stayer/
Raised by: catalog.views.product

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.