Fatal error: Uncaught Error: Class 'Magento\Framework\Exception\RuntimeException' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/App/Request/InvalidRequestException.php:20 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/App/Request/InvalidRequestException.php on line 20