JavaScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Value cannot be null.

RELATED TO:

AUTHOR: Stephania Tapela

DATE POSTED: October 26, 2016

Article information

Article relates to

Telerik Reporting
Visual Studio 2013+

Created by

Stef, Telerik

Last modified

October 26th, 2016

Last modified by

Stef, Telerik

PROBLEM
0x800a139e - JavaScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Value cannot be null.

The above error occurs when testing a Web Application in browser, run from Visual Studio 2013+.


SOLUTION 

Such error can occur if the Web application is Ajaxified. BrowserLink is introduced in Visual Studio 2013. It can intersect AJAX calls, resulting in a JavaScript runtime error. To test the application you can switch off BrowserLink from Visual Studio settings.

For more details, check Using Browser Link in Visual Studio 2013 (source www.asp.net).

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