Can't access Backoffice Prestashop 9

[Daniel Chaniago]

I have successfully installed Prestashop PrestaShop 9.0.1-1.0, but when accessing the backoffice it cannot be accessed. I use Herd as a local server (nginx, PHP 8.4)

[El Patron]

php 8,3 is official supported php version for ps9

https://prestaheroes.com/blogs/prestashop-alerts/best-php-version-for-prestashop-9

change php level and see if that helps

[Daniel Chaniago]

10 hours ago, El Patron said:

php 8,3 is official supported php version for ps9

https://prestaheroes.com/blogs/prestashop-alerts/best-php-version-for-prestashop-9

change php level and see if that helps

Thank you, @El Patron, for your suggestion to fix my issue. I've tried following the steps in the link, and the results are as follows. Are there any other settings I should make?

[El Patron]

On 10/21/2025 at 7:38 PM, Daniel Chaniago said:

Thank you, @El Patron, for your suggestion to fix my issue. I've tried following the steps in the link, and the results are as follows. Are there any other settings I should make?

Hi, you will (always) need to look at log or enable debug mode to get the underlying error, 500 obfusificates the real error.

here is another blog article that may help

https://prestaheroes.com/blogs/prestashop-alerts/how-to-enable-prestashop-debug-mode-v8-v9

note I've done two 9.0.1, heck even a 9.0.0...they both installed...I will give you my best good, use the latest stable prestashop 8, ps9 is still not really ready for prime time unless you have tech skills to fix bugs.