Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Writer\Xlsx\WriterPart' not found in C:\xampp\htdocs\rabani-mobile-api\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Writer\Xlsx\RelsRibbon.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\rabani-mobile-api\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Writer\Xlsx\RelsRibbon.php on line 9