Fatal error: Uncaught Error: Call to undefined function Magento\Framework\Serialize\Serializer\utf8ize() in /var/www/html/vendor/magento/framework/Serialize/Serializer/Json.php:24
Stack trace:
#0 /var/www/html/vendor/magento/framework/ObjectManager/Config/Config.php(292): Magento\Framework\Serialize\Serializer\Json->serialize()
#1 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(84): Magento\Framework\ObjectManager\Config\Config->extend()
#2 /var/www/html/vendor/magento/framework/App/ObjectManager/Environment/Developer.php(79): Magento\Framework\ObjectManager\ObjectManager->configure()
#3 /var/www/html/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Developer->configureObjectManager()
#4 /var/www/html/vendor/magento/framework/App/Bootstrap.php(212): Magento\Framework\App\ObjectManagerFactory->create()
#5 /var/www/html/vendor/magento/framework/App/Bootstrap.php(127): Magento\Framework\App\Bootstrap->__construct()
#6 /var/www/html/pub/index.php(27): Magento\Framework\App\Bootstrap::create()
#7 {main}
thrown in /var/www/html/vendor/magento/framework/Serialize/Serializer/Json.php on line 24