Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Calculation\Financial\FinancialValidations' not found in C:\xampp\htdocs\finance\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Calculation\Financial\Securities\SecurityValidations.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\finance\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Calculation\Financial\Securities\SecurityValidations.php on line 9