Msproject export issue

Gantt
#1

When I call the local import/export service, the following error occurs

“net.sf.mpxj.mspdi.XsdDuration”的类型初始值设定项引发异常。

   在 net.sf.mpxj.mspdi.XsdDuration..ctor(Duration duration)
   在 net.sf.mpxj.mspdi.DatatypeConverter.printDurationMandatory(MSPDIWriter writer, Duration duration)
   在 net.sf.mpxj.mspdi.DatatypeConverter.printDuration(MSPDIWriter writer, Duration duration)
   在 net.sf.mpxj.mspdi.MSPDIWriter.writeTask(Int32 , Task )
   在 net.sf.mpxj.mspdi.MSPDIWriter.writeTasks(Project )
   在 net.sf.mpxj.mspdi.MSPDIWriter.write(ProjectFile projectFile, OutputStream stream)
   在 net.sf.mpxj.mspdi.MSPDIWriter.Write(ProjectFile , OutputStream )
   在 GanttToMsProject.Core.MicrosoftProject.ProjectWriter.Write(ProjectFile projectFile, TargetApplication app) 在 gantt-msproject-service\GanttToMsProject.Core\MicrosoftProject\ProjectWriter.cs 中: 第 82 行
   在 GanttToMsProject.Core.MicrosoftProject.MProject.ImportXmlFromJson(String json, Boolean isLicensed, TargetApplication app) 在 gantt-msproject-service\GanttToMsProject.Core\MicrosoftProject\MProject.cs 中: 第 24 行
   在 GanttToMsProject.WebAPI.Controllers.MspConversionController.JsonToXml() 在 gantt-msproject-service\GanttToMsProject.WebAPI\Controllers\MspConversionController.cs 中: 第 100 行
#2

Hello Jesse,
It is hard to suggest what might be wrong as I don’t see your code.

Please add your configuration to the following snippet and make sure that the issue is reproduced there:

Then, click on the Save button and send me the link.
Or send me a ready demo with all the necessary JavaScript and CSS files so that I can reproduce the issue locally.

#3

Thank you for your reply.
I did not have this issue in the example on the official website, but I downloaded the import and export service and wanted to deploy it independently. The downloaded import and export service only had this error message

#4

Hello Jesse,
It seems you downloaded an older version of the MSP export module that is an ASP.NET MVC application. There is a newer version that is a .NET Core application that is currently used by the online export server.
If you encounter issues with that, you can submit a support request to the email specified in the letter with the license.