субару проверка мап сенсора

Source File: d:\webs\getprice2\App_code\BLL.cs    Line: 3638

Line 3640: if (user_agent.Trim().Length == 0)

Line 3638: user_agent = user_agent.ToLower();

Line 3637: string user_agent = curcontext.Request.ServerVariables["HTTP_USER_AGENT"];

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

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.

Object reference not set to an instance of an object.

Object reference not set to an instance of an object.