Server Error in '/' Application.

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.

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

Source Error:


Line 42:             Dim shopName As String = Replace(Request.QueryString("shop"), ".myshopify.com", String.Empty)
Line 43:             Dim s As shop = db.shops.Where(Function(i) i.name = shopName).FirstOrDefault
Line 44:             shop_id = s.shopid
Line 45:             shop_name = s.name
Line 46:             countrycodes = s.country_codes_limit

Source File: C:\inetpub\wwwroot\store_locator\map.aspx    Line: 44

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ASP.map_aspx.Page_Load(Object sender, EventArgs e) in C:\inetpub\wwwroot\store_locator\map.aspx:44
   System.Web.UI.Control.OnLoad(EventArgs e) +105
   System.Web.UI.Control.LoadRecursive() +67
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3784


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3429.0