Product backoffice redirect?

[Inform-All]

Hi,

So i have a PS 1.7.4.2 installation, when i want to edit (or create) a product i get redirected to the frontoffice with a 404. 
The debug mode gives me nothing, i already checked all my logs and also... Nothing! I also checked no Nginx is running, no false config there either.
Also checked my .htaccess, it should be fine! even regenerated it couple of times. And cross checked from a different shop, but nothing weird to see. I also manually cleared all the cache (including the smarty caching).

Any ideas on where to check next?

[BitNation]

I was facing similar issues. For me it meant that, even though 1-click-upgrade told me differently, an upgrade hadn't succesfully been executed. I followed the manual upgrade instructions on this page https://devdocs.prestashop.com/1.7/basics/keeping-up-to-date/upgrade/ to complete the upgrade and all is fine now.

Don't forget to clear the cache and if needed to rename the admin folder.