Fatal error: Uncaught Symfony\Component\Cache\Exception\InvalidArgumentException: Cache key must be string, "NULL" given. in /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/vendor/symfony/symfony/src/Symfony/Component/Cache/CacheItem.php:173
Stack trace:
#0 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/vendor/symfony/symfony/src/Symfony/Component/Cache/Traits/AbstractTrait.php(289): Symfony\Component\Cache\CacheItem::validateKey(NULL)
#1 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/vendor/symfony/symfony/src/Symfony/Component/Cache/Traits/AbstractAdapterTrait.php(42): Symfony\Component\Cache\Adapter\AbstractAdapter->getId(NULL)
#2 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/src/Core/Localization/CLDR/DataLayer/LocaleCache.php(82): Symfony\Component\Cache\Adapter\AbstractAdapter->getItem(NULL)
#3 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/src/Core/Data/Layer/AbstractDataLayer.php(91): PrestaShop\PrestaShop\Core\Localization\CLDR\DataLayer\LocaleCache->doRead(NULL)
#4 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/src/Core/Localization/CLDR/LocaleDataSource.php(62): PrestaShop\PrestaShop\Core\Data\Layer\AbstractDataLayer->read(NULL)
#5 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/src/Core/Localization/CLDR/LocaleRepository.php(58): PrestaShop\PrestaShop\Core\Localization\CLDR\LocaleDataSource->getLocaleData(NULL)
#6 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/src/Core/Localization/Locale/Repository.php(173): PrestaShop\PrestaShop\Core\Localization\CLDR\LocaleRepository->getLocale(NULL)
#7 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/src/Core/Localization/Locale/Repository.php(149): PrestaShop\PrestaShop\Core\Localization\Locale\Repository->getNumberSpecification(NULL)
#8 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/classes/controller/Controller.php(209): PrestaShop\PrestaShop\Core\Localization\Locale\Repository->getLocale(NULL)
#9 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/classes/controller/FrontController.php(284): ControllerCore->init()
#10 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/classes/controller/Controller.php(300): FrontControllerCore->init()
#11 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/classes/Dispatcher.php(510): ControllerCore->run()
#12 /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/index.php(28): DispatcherCore->dispatch()
#13 {main}
  thrown in /alt/home/webmaster.grajlandiacompl/www/domeny/grajlandia.com.pl/vendor/symfony/symfony/src/Symfony/Component/Cache/CacheItem.php on line 173