404 Error on translated pages

I’m getting a 404 error on translated pages. I followed previous topic on this and rolled back to version 8.4 but it still is not working.

https://www.pedlex.com/promotions/fr/product/heavy-duty-mobile-cabinet-10-drawers-72x27x43h/

Any help would be appreciated.

The page I need help with: [log in to see the link]