Fatal error: Uncaught Error: Class "Magento\Framework\Model\ResourceModel\Db\AbstractDb" not found in /home/airtimer/public_html/vendor/magento/module-message-queue/Model/ResourceModel/Lock.php:20 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/magento/module-message-queue/Model/ResourceModel/Lock.php on line 20