[ArgumentException: Illegal characters in path.]
System.IO.Path.CheckInvalidPathChars(String path) +10427518
System.IO.Path.GetExtension(String path) +30
System.ServiceModel.Activation.HttpModule.ProcessRequest(Object sender, EventArgs e) +155
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171
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