Fatal error: Uncaught Symfony\Component\Cache\Exception\InvalidArgumentException: Cache key must be string, "NULL" given. in /home/softtechok/STV2/vendor/symfony/symfony/src/Symfony/Component/Cache/CacheItem.php:161 Stack trace: #0 /home/softtechok/STV2/vendor/symfony/symfony/src/Symfony/Component/Cache/Traits/AbstractTrait.php(235): Symfony\Component\Cache\CacheItem::validateKey(NULL) #1 /home/softtechok/STV2/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php(154): Symfony\Component\Cache\Adapter\AbstractAdapter->getId(NULL) #2 /home/softtechok/STV2/src/Core/Localization/CLDR/DataLayer/LocaleCache.php(82): Symfony\Component\Cache\Adapter\AbstractAdapter->getItem(NULL) #3 /home/softtechok/STV2/src/Core/Data/Layer/AbstractDataLayer.php(91): PrestaShop\PrestaShop\Core\Localization\CLDR\DataLayer\LocaleCache->doRead(NULL) #4 /home/softtechok/STV2/src/Core/Localization/CLDR/LocaleDataSource.php(62): PrestaShop\PrestaShop\Core\Data\Layer\AbstractDataLayer->read(NULL) #5 /home/softtechok/STV2/src/Cor in /home/softtechok/STV2/vendor/symfony/symfony/src/Symfony/Component/Cache/CacheItem.php on line 161