Error 500 or white screen when attempting to checkout

[laytonedgington]

Hi everyone, I recently upgraded to Prestashop 1.8.0.4 PHP 8.0, and my site URL is https://www.gr8-kitchenware.co.uk/

When attempting to checkout as a guest it takes me onto the checkout page and allows me to put my addresses and everything in, but as soon as I click proceed to payment the page returns an error 500 every single time. 

When I am already signed into my account and I click proceed to checkout, the screen automatically either whites out or returns the error 500 without taking me to the next page.

I have attached some screenshots for reference.

If anyone could please help me I would truly be grateful. Thanks so much for your time.

 

[endriu107]

Hi, at first turn on debug mode and try reproduce issue. You should get errors messages that tell as more about it.

[laytonedgington]

47 minutes ago, endriu107 said:

Hi, at first turn on debug mode and try reproduce issue. You should get errors messages that tell as more about it.

Hiya, many thanks for your response!

When I enter debug mode the front office strangely no longer produces 500 error at checkout, and instead it just turns into a blank white screen.

No error logs come up to do with issue, but I have a lot of deprecations (117).

I have added some screenshots of this.

Thanks again.

[Rhobur]

It seems you need to upgrade the klarnapaymentsofficial module, ask the developer for a compatible version if there is any.

[laytonedgington]

On 6/24/2023 at 9:55 AM, Rhobur said:

It seems you need to upgrade the klarnapaymentsofficial module, ask the developer for a compatible version if there is any.

Thank you for your advice, I had to disable Klarna to get it working again. Your advice is really appreciated.