Fatal error: Uncaught Error: Class "Magento\Framework\App\Helper\AbstractHelper" not found in /home/airtimer/public_html/app/code/Mageplaza/Core/Helper/AbstractData.php:42 Stack trace: #0 {main} thrown in /home/airtimer/public_html/app/code/Mageplaza/Core/Helper/AbstractData.php on line 42