Page not found (404)

Request Method: GET
Request URL: https://opt-stroy.com/product/kran-sharovyi-ld-kshtsm-iz-stali-20-du-40-ru-40-mpa00000020788/
Raised by: apps.catalog.views.product_detail

No Product 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.