Fatal error: Uncaught Error: Class 'InventoryCore' not found in /home/koontak127/public_html/php/sale.php:10 Stack trace: #0 /home/koontak127/public_html/php/sale.php(381): Sale->__construct() #1 /home/koontak127/public_html/php/office-utils.php(2362): BodiforlifeSale->__construct() #2 {main} thrown in /home/koontak127/public_html/php/sale.php on line 10