Fatal error: Uncaught Error: Class 'Illuminate\Support\Manager' not found in /opt/lampp/htdocs/kuesioner/vendor/maatwebsite/excel/src/Transactions/TransactionManager.php:7 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/maatwebsite/excel/src/Transactions/TransactionManager.php on line 7