Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Style\Supervisor' not found in E:\xampp\htdocs\webhost_v2\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Style\Borders.php:7 Stack trace: #0 {main} thrown in E:\xampp\htdocs\webhost_v2\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Style\Borders.php on line 7