Fatal error: Uncaught Error: Class 'InventoryCore' not found in /home/koontak127/public_html/php/expense.php:10 Stack trace: #0 /home/koontak127/public_html/php/expense.php(165): Expense->__construct() #1 /home/koontak127/public_html/php/expense.php(251): OnlineExpense->__construct() #2 /home/koontak127/public_html/php/expense.php(294): BodiExpense->__construct() #3 /home/koontak127/public_html/php/office-utils.php(2381): BusinessExpense->__construct() #4 {main} thrown in /home/koontak127/public_html/php/expense.php on line 10