无法识别的配置部分 entityFramework

Question

<?xml version="1.0" encoding="utf-8"?><configuration>  <configSections>    <sectionGroup name="dotNetOpenAuth" type="DotNetOpenAuth.Configuration.DotNetOpenAuthSection, DotNetOpenAuth.Core">      <section name="messaging" type="DotNetOpenAuth.Configuration.MessagingElement, DotNetOpenAuth.Core" requirePermission="false" allowLocation="true" />      <section name="reporting" type="DotNetOpenAuth.Configuration.ReportingElement, DotNetOpenAuth.Core" requirePermission="false" allowLocation="true" />      <section name="oauth" type="DotNetOpenAuth.Configuration.OAuthElement, DotNetOpenAuth.OAuth" requirePermission="false" allowLocation="true" />      <section name="openid" type="DotNetOpenAuth.Configuration.OpenIdElement, DotNetOpenAuth.OpenId" requirePermission="false" allowLocation="true" />    </sectionGroup>  </configSections>   <!--For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 </configSections>  <configuration>    <configSections>        <section name="quartz" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" />            <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />        <sectionGroup name="common">            <section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" />      <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />        </sectionGroup>    </configSections>-->我创建了一个 ASP.NET 网页项目，准确地说是 Razor V3，在第一次构建后，出现以下错误Unrecognized configuration section entity Framework" \Web.config.I 尝试从 nugget manager 安装 Data.Entity 但它没有工作。（严重性代码描述项目文件行抑制状态错误无法识别的配置部分 entityFramework。C:\Users\HP\源\repos\VisitoMgtApp\VisitoMgtApp\Web.config 135）。请帮帮我