Fatal error: Uncaught Error: Class 'Magento\Customer\Model\ResourceModel\Customer\Collection' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-product-alert/Model/ResourceModel/Stock/Customer/Collection.php:13 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-product-alert/Model/ResourceModel/Stock/Customer/Collection.php on line 13