500 error on theme_name for a new installation

[ypastor]

I'm installing prestashop 8.0.1 on my server :

Debian 10.13

php 8.1.14

MariaDB 10.0.36

On my new prestashop installation, i've got this error :

[Thu Jan 19 10:00:16.945710 2023] [proxy_fcgi:error] [pid 14942] [client 192.168.1.254:60521] AH01071: Got error 'PHP message: PHP Warning:  Attempt to read property "theme_name" on null in /var/www/html/rockNCurvesShop/var/cache/prod/ContainerQREhNPk/appAppKernelProdContainer.php on line 2702', referer: http://rock-n-curves.net/install/index.php

Anyone can help me ?

EDIT :

- Permissions looks ok (www-data:www-data 775), app/Resources/translations wasn't exist, manually created.

- php-ps-info : everything is green

Edited January 19, 2023 by ypastor (see edit history)