Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\Reader\IReader" not found in C:\xampp\htdocs\xlsss\PhpSpreadsheet-master\src\PhpSpreadsheet\Reader\BaseReader.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\xlsss\PhpSpreadsheet-master\src\PhpSpreadsheet\Reader\BaseReader.php on line 11