Fatal error: Uncaught Error: Interface 'Magento\Framework\View\Asset\PreProcessorInterface' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/View/Asset/PreProcessor/AlternativeSourceInterface.php:16 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/View/Asset/PreProcessor/AlternativeSourceInterface.php on line 16