Fatal error: Uncaught InvalidArgumentException: Unable to serialize value. Error: Malformed UTF-8 characters, possibly incorrectly encoded in /home/digi.co.id/public_html/vendor/magento/framework/Serialize/Serializer/Json.php:26 Stack trace: #0 /home/digi.co.id/public_html/vendor/magento/framework/ObjectManager/Config/Config.php(277): Magento\Framework\Serialize\Serializer\Json->serialize(Array) #1 /home/digi.co.id/public_html/vendor/magento/framework/ObjectManager/ObjectManager.php(84): Magento\Framework\ObjectManager\Config\Config->extend(Array) #2 /home/digi.co.id/public_html/vendor/magento/framework/App/ObjectManager/Environment/Developer.php(79): Magento\Framework\ObjectManager\ObjectManager->configure(Array) #3 /home/digi.co.id/public_html/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Developer->configureObjectManager(Object(Magento\Framework\Interception\ObjectManager\Config\Developer), Array) #4 /home/digi.co.id/public_html/vendor/magento/framework/App/ in /home/digi.co.id/public_html/vendor/magento/framework/Serialize/Serializer/Json.php on line 26