Fatal error: Uncaught Error: Interface "Box\Spout\Common\Helper\FileSystemHelperInterface" not found in C:\xampp\htdocs\dfs_lead_generator_old\vendor\box\spout\src\Spout\Common\Helper\FileSystemHelper.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\dfs_lead_generator_old\vendor\box\spout\src\Spout\Common\Helper\FileSystemHelper.php on line 12