**Originated From:** [https://products.aspose.app/cad/conversion/dgn-to-pdf#:~:text=%20How%20to%20convert%20DGN%20to%20PDF%20,converted%20files%20will%20be%20available%20instantly...%20More%20/navigation/errorReportForm/errorReportSuccess/errorReportForm/errorReportForm](https://products.aspose.app/cad/conversion/dgn-to-pdf#:~:text=%20How%20to%20convert%20DGN%20to%20PDF%20,converted%20files%20will%20be%20available%20instantly...%20More%20/navigation/errorReportForm/errorReportSuccess/errorReportForm/errorReportForm)
**Exception:** Internal Server Error [500].
"error" {"readyState":4,"responseText":"{\"Files\":null,\"DownloadFileLink\":null,\"StatusCode\":500,\"FileName\":null,\"FolderName\":\"37eb75fc-d6bf-4fc0-8d0d-eb4aab1e73e8\",\"Status\":\"500 500\",\"Text\":null,\"FileProcessingErrorCode\":0,\"FileCount\":0,\"IsSuccess\":false,\"idError\":\"InternalError\",\"Message\":\"Image loading failed: The Dgn version isn't valid. Only Dgn: V7 are currently supported.\"}","responseJSON":{"Files":null,"DownloadFileLink":null,"StatusCode":500,"FileName":null,"FolderName":"37eb75fc-d6bf-4fc0-8d0d-eb4aab1e73e8","Status":"500 500","Text":null,"FileProcessingErrorCode":0,"FileCount":0,"IsSuccess":false,"idError":"InternalError","Message":"Image loading failed: The Dgn version isn't valid. Only Dgn: V7 are currently supported."},"status":500,"statusText":"Internal Server Error"}
Error on zipping file System.ArgumentNullException: Value cannot be null. Parameter name: paths at System.IO.Path.Combine(String[] paths) at Aspose.App.Helpers.PathSafe.GenerateAndValidate(String baseDir, String[] parts) in D:\Code\ASP\aspose.cad.apps\Aspose.App\src\Aspose.App.API\Helpers\PathSafe.cs:line 25 at Aspose.App.Services.Error2Forum.Error2ForumService.d__4.MoveNext() in D:\Code\ASP\aspose.cad.apps\Aspose.App\src\Aspose.App.API\Services\Error2Forum\Error2ForumService.cs:line 103
Could you please share the problematic file? We couldn’t reproduce it using sample DGN.