Add to cart not working for some products

[Nevaf Ay]

On this page https://staging.die-edelhelfer.de/ortlieb-back-roller-classic-ql2-1-fahrradtasche-paar-aphalt-black.... when I click on add to cart the product is not added. Instead the page is reloaded and I see the error message: Unique constraint violation found

When I look in the browser inspector in the response there is nothing.

Normally there should be [] for Json response I think.

Could someone please help me with this problem?

[namitapare2a78]

Hello @Nevaf Ay,

Greetings!

It can be possible due to your DB is not being properly imported. There is some broken reference in that.

So kindly check that again.

I hope this will help you to resolve your issue.

If not, feel free to contact us.

If worked? Click KUDOS and accept as a solution.

Thank you!

[Nevaf Ay]

Thank you @namitapare2a78 for the answer.

I tried this https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-db-status.ht...

The return is "All modules are up to date."

After that I tried this https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-db-upgr.html

The return is "Nothing to import."

After that I can add one Simple Product to cart.

Like this one: https://staging.die-edelhelfer.de/ortlieb-back-roller-classic-ql2-1-fahrradtasche-paar-aphalt-black....

But it works only one time.

When I try it ones more with another simple product the error is the same: Unique constraint violation found

What else can I do?