wpf 预览报表

An unexpected error occurred. Additional information: '“GrapeCity.ActiveReports.Drawing.Core.FontsFactory”的类型初始值设定项引发异常。'
   在 GrapeCity.ActiveReports.Document.PageDocument.Render(IRenderingExtension renderingExtension, StreamProvider streams, NameValueCollection settings, Boolean forceDataRefresh, Boolean forceParameterDataRefresh, CancellationToken token)
   在 GrapeCity.ActiveReports.Viewer.Common.Internal.RdlReport.<>c__DisplayClass23_0.<LoadImpl>b__5()
   在 System.Threading.Tasks.Task.Execute()

您好，可以先检查一下该报表在桌面设计器预览是否正常，根据报错信息，猜测您应该是有报表参数，报表参数设置了默认值，检查一下参数。