Fatal error: Uncaught Error: Interface "Magento\Framework\Notification\MessageInterface" not found in /home/airtimer/public_html/app/code/Mageplaza/Core/Model/Message/Validate.php:33 Stack trace: #0 {main} thrown in /home/airtimer/public_html/app/code/Mageplaza/Core/Model/Message/Validate.php on line 33