Fatal error: Uncaught Error: Class 'PHPExcel_Style_Supervisor' not found in /app/web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/Borders.php:28 Stack trace: #0 {main} thrown in /app/web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/Borders.php on line 28