Fatal error: Uncaught Symfony\Component\Cache\Exception\InvalidArgumentException: Cache key must be string, "NULL" given in /var/www/clients/client0/web1/web/vendor/symfony/symfony/src/Symfony/Component/Cache/CacheItem.php:156 Stack trace: #0 /var/www/clients/client0/web1/web/vendor/symfony/symfony/src/Symfony/Component/Cache/Traits/AbstractTrait.php(235): Symfony\Component\Cache\CacheItem::validateKey(NULL) #1 /var/www/clients/client0/web1/web/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php(152): Symfony\Component\Cache\Adapter\AbstractAdapter->getId(NULL) #2 /var/www/clients/client0/web1/web/src/Core/Localization/CLDR/DataLayer/LocaleCache.php(82): Symfony\Component\Cache\Adapter\AbstractAdapter->getItem(NULL) #3 /var/www/clients/client0/web1/web/src/Core/Data/Layer/AbstractDataLayer.php(90): PrestaShop\PrestaShop\Core\Localization\CLDR\DataLayer\LocaleCache->doRead(NULL) #4 /var/www/clients/client0/web1/web/src/Core/Localization/CLDR/LocaleDataSource.php(62): PrestaShop\PrestaShop\Core\Da in /var/www/clients/client0/web1/web/vendor/symfony/symfony/src/Symfony/Component/Cache/CacheItem.php on line 156