Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Style\Supervisor' not found in /home/flexinettek/public_html/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Font.php:7 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Font.php on line 7