Server Error in '/' Application.

String cannot be of zero length.
Parameter name: oldValue

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: String cannot be of zero length.
Parameter name: oldValue

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ArgumentException: String cannot be of zero length.
Parameter name: oldValue]
   System.String.ReplaceInternal(String oldValue, String newValue) +0
   System.String.Replace(String oldValue, String newValue) +19
   ExtendedModules_News_UI_DownloadFile.Page_Load(Object sender, EventArgs e) +778
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4057.0