C# 更新包后，对象引用未设置为_Layout.cshtml中对象的实例

在我通过更新所有NuGet软件包之前，项目一直运行良好 NuGet Manager（我正在尝试获取最新的OWIN包）

这个错误在_Layout.cshtml中，我根本没有涉及它

对象引用未设置为对象的实例

描述：在执行过程中发生未处理的异常 当前的web请求。请查看堆栈跟踪以了解更多信息 有关错误的信息及其在代码中的来源

异常详细信息：System.NullReferenceException:对象引用不存在 设置为对象的实例

源错误：

Line 13:  
Line 14:     <!-- Custom Fonts -->
Line 15:     @Scripts.Render("~/Content/fonts")

我的Microsoft.OWin.Security、Microsoft.OWin.Security.Google和Microsoft.OWin是3.0.1.0版

---

更新2

以下是堆栈跟踪：

堆栈跟踪：

[NullReferenceException:对象引用未设置为 object.]Microsoft.Ajax.Utilities.JSParser.ParseExpression（AstNode leftHandSide、Boolean single、Boolean BCanasign、JSToken inToken） +1007 Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement（布尔值 F资源元素）+268
Microsoft.Ajax.Utilities.JSParser.ParseStatement（布尔值 fSourceElement，布尔值skipImportantComment）+1552
Microsoft.Ajax.Utilities.JSParser.ParseBlock（）+164
Microsoft.Ajax.Utilities.JSParser.ParseStatement（布尔值 fSourceElement，布尔值skipImportantComment）+498
Microsoft.Ajax.Utilities.JSParser.ParseBlock（）+164
Microsoft.Ajax.Utilities.JSParser.ParseStatement（布尔值 fSourceElement，布尔值skipImportantComment）+498
Microsoft.Ajax.Utilities.JSParser.ParseBlock（）+164
Microsoft.Ajax.Utilities.JSParser.ParseStatement（布尔值 fSourceElement，布尔值skipImportantComment）+498
Microsoft.Ajax.Utilities.JSParser.ParseStatements（块）+159
Microsoft.Ajax.Utilities.JSParser.InternalParse（）+1011
Microsoft.Ajax.Utilities.JSParser.Parse（DocumentContext sourceContext） +123 Microsoft.Ajax.Utilities.JSParser.Parse（DocumentContext sourceContext，CodeSettings设置）+54
Microsoft.Ajax.Utilities.Minifier.MinifyJavaScript（字符串源代码， 代码设置代码设置）+987
System.Web.Optimization.JsMinify.Process（BundleContext， 捆绑响应）+310
System.Web.Optimization.Bundle.ApplyTransforms（BundleContext， 字符串bundleContent，IEnumerable

1 bundleFiles）+263

System.Web.Optimization.Bundle.GenerateBundlerResponse（BundleContext
上下文）+355

System.Web.Optimization.Bundle.GetBundleResponse（BundleContext
上下文）+104

System.Web.Optimization.BundleResolver.GetBundleContents（字符串
虚拟路径）+254

System.Web.Optimization.AssetManager.DeterminePathsToRender（IEnumerable

1 资产）+252
System.Web.Optimization.AssetManager.RenderExplicit（字符串标记格式， 字符串[]路径）+75
System.Web.Optimization.Scripts.RenderFormat（字符串标记格式， 字符串[]路径）+292
System.Web.Optimization.Scripts.Render（字符串[]路径）+51
ASP.\页面\视图\共享\布局\ cshtml.Execute（）中的 f:\Workplace\lrc\lrc\Views\Shared\u Layout.cshtml:15
System.Web.WebPages.WebPageBase.ExecutePageHierarchy（）+271
System.Web.Mvc.WebViewPage.ExecutePageHierarchy（）+121
System.Web.WebPages.WebPageBase.ExecutePageHierarchy（WebPageContext pageContext、TextWriter编写器、WebPageUnderingBase起始页）+145
System.Web.WebPages.WebPageBase.ExecutePageHierarchy（WebPageContext pageContext，TextWriter）+41
System.Web.WebPages.c\uuuu DisplayClass3.b\uuuu 2（TextWriter writer）+335 System.Web.WebPages.HelperResult.WriteTo（TextWriter 作家）+42
System.Web.WebPages.WebPageExecutingBase.WriteTo（TextWriter， HelperResult内容）+45
System.Web.WebPages.WebPageBase.Write（HelperResult结果）+53
System.Web.WebPages.WebPageBase.RendersUrounding（字符串 partialViewName，Action

1 body）+178

System.Web.WebPages.WebPageBase.PopContext（）+229

System.Web.WebPages.WebPageBase.ExecutePageHierarchy（WebPageContext
pageContext、TextWriter编写器、WebPageUnderingBase起始页）+154

System.Web.Mvc.RazorView.RenderView（ViewContext，
TextWriter编写器，对象实例）+695

System.Web.Mvc.BuildManagerCompiledView.Render（ViewContext
viewContext，TextWriter）+382

System.Web.Mvc.ViewResultBase.ExecuteSult（ControllerContext上下文）
+431 System.Web.Mvc.ControllerActionInvoker.InvokeActionResult（ControllerContext
controllerContext，ActionResult ActionResult）+39

System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive（IList

1 筛选器、Int32筛选器索引、ResultExecutingContext预文本、， ControllerContext ControllerContext，ActionResult ActionResult）+116
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive（IList

1
筛选器、Int32筛选器索引、ResultExecutingContext预文本、，
ControllerContext ControllerContext，ActionResult ActionResult）+529

System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters（ControllerContext
controllerContext，IList

1过滤器，ActionResult ActionResult）+106
System.Web.Mvc.Async.c__显示类2B.b__1c（） +321 System.Web.Mvc.Async.c__DisplayClass21.b__1e（IAsyncResult 异步结果）+185
System.Web.Mvc.Async.WrappedAsyncResult

1.CallEndDelegate（IAsyncResult
异步结果）+42

System.Web.Mvc.Async.WrappedAsyncResultBase

1.End（）+133
System.Web.Mvc.Async.AsyncResultRapper.End（IAsyncResult asyncResult， 对象标记）+56
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction（IAsyncResult 异步结果）+40
System.Web.Mvc.Controller.b_u1d（IAsyncResult asyncResult，ExecuteCoretate innerState）+34
System.Web.Mvc.Async.WrappedAsyncVoi

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="LRC - We are aiming at building up a healthier life style.">
    <meta name="author" content="Winston Fan">
    <title>@ViewBag.Title - LRC</title>
    @Styles.Render("~/Content/css")
    @Scripts.Render("~/bundles/modernizr")


    <!-- Custom Fonts -->

        @Scripts.Render("~/Content/fonts")

    <link href="http://fonts.googleapis.com/css?family=Lora:400,700,400italic,700italic" rel="stylesheet" type="text/css">
    <link href="http://fonts.googleapis.com/css?family=Montserrat:400,700" rel="stylesheet" type="text/css">

bundles.Add(new ScriptBundle("~/Content/fonts").Include(
              "~/Content/font-awesome/fonts/fontawesome-*",
              "~/Content/font-awesome/fonts/FontAwesome.otf"));

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Antlr" version="3.5.0.2" targetFramework="net451" />
  <package id="bootstrap" version="3.3.4" targetFramework="net451" />
  <package id="EntityFramework" version="6.1.3" targetFramework="net451" />
  <package id="jQuery" version="2.1.3" targetFramework="net451" />
  <package id="jQuery.Validation" version="1.13.1" targetFramework="net451" />
  <package id="Microsoft.AspNet.Identity.Core" version="2.2.1" targetFramework="net451" />
  <package id="Microsoft.AspNet.Identity.EntityFramework" version="2.2.1" targetFramework="net451" />
  <package id="Microsoft.AspNet.Identity.Owin" version="2.2.1" targetFramework="net451" />
  <package id="Microsoft.AspNet.Mvc" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net451" />
  <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.3" targetFramework="net451" />
  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security.Cookies" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security.Facebook" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security.Google" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security.MicrosoftAccount" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security.OAuth" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Owin.Security.Twitter" version="3.0.1" targetFramework="net451" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net451" />
  <package id="Modernizr" version="2.8.3" targetFramework="net451" />
  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net451" />
  <package id="Owin" version="1.0" targetFramework="net451" />
  <package id="Respond" version="1.4.2" targetFramework="net451" />
  <package id="WebGrease" version="1.6.0" targetFramework="net451" />
</packages>

var test = condition ? true_value ? false_value;

bundles.Add(new ScriptBundle("~/bundles/mybundle").Include(
            "~/Scripts/...",
            "~/Scripts/..."));

bundles.Add(new Bundle("~/bundles/mybundle").Include(
            "~/Scripts/...",
            "~/Scripts/..."));

bundles.Add(new StyleBundle("~/bundles/mybundle").Include(
        "~/Content/...",
        "~/Content/..."));