Server Error in '/' Application.

Value cannot be null.
Parameter name: source

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.ArgumentNullException: Value cannot be null.
Parameter name: source

Source Error:


Line 284: <ul class="follow-us"> Line 285: @if (PortalManager.SinglePhraseByApiKey(PhraseTypes.Twitter) != null) Line 286: { Line 287: <li> Line 288: <a href="@PortalManager.SinglePhraseByApiKey(PhraseTypes.Twitter).Url" title="@PortalManager.SinglePhraseByApiKey(PhraseTypes.Twitter).Value">

Source File: C:\inetpub\wwwroot\Sync\Total_WLs\Views\Shared\_Layout.cshtml    Line: 286

Stack Trace:


[ArgumentNullException: Value cannot be null. Parameter name: source] System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source, Func`2 predicate) +297 Services.Samita.PortalService.SinglePhrase(PhraseTypes phraseType) in G:\Project\PortalHotelsOrg\Services\Samita\PortalService.cs:89 Common.Helper.PortalManager.SinglePhraseByApiKey(PhraseTypes phraseType) in G:\Project\PortalHotelsOrg\Common\Helper\PortalManager.cs:27 ASP._Page_Views_Shared__Layout_cshtml.Execute() in C:\inetpub\wwwroot\Sync\Total_WLs\Views\Shared\_Layout.cshtml:286 System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252 System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148 System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122 System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +309 System.Web.WebPages.WebPageBase.Write(HelperResult result) +108 System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +89 System.Web.WebPages.WebPageBase.PopContext() +310 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +88 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +775 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +775 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81 System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +188 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38 System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73 System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39 System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38 System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +43 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3930.0