Fatal error: Uncaught Error: Class 'JsonSchema\Constraints\Factory' not found in /home/magento/public_html/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/BaseConstraint.php:43 Stack trace: #0 /home/magento/public_html/vendor/composer/composer/src/Composer/Json/JsonFile.php(173): JsonSchema\Constraints\BaseConstraint->__construct() #1 /home/magento/public_html/vendor/composer/composer/src/Composer/Factory.php(290): Composer\Json\JsonFile->validateSchema(1) #2 /home/magento/public_html/vendor/composer/composer/src/Composer/Factory.php(576): Composer\Factory->createComposer(Object(Composer\IO\BufferIO), '/home/magento/p...', false) #3 /home/magento/public_html/vendor/magento/framework/Composer/ComposerFactory.php(47): Composer\Factory::create(Object(Composer\IO\BufferIO), '/home/magento/p...') #4 /home/magento/public_html/vendor/magento/framework/Composer/ComposerInformation.php(362): Magento\Framework\Composer\ComposerFactory->create() #5 /home/magento/public_html/vendor/magento/framework/Composer/ComposerInfor in /home/magento/public_html/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/BaseConstraint.php on line 43