Fatal error: Uncaught Error: Class 'Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-product-alert/Model/ResourceModel/Price/Collection.php:15 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-product-alert/Model/ResourceModel/Price/Collection.php on line 15