EF 6.1 Configuration using Interceptors with WCF - entity-framework

Question

I am trying to turn on database logging using the interceptor feature that was added in EF 6.1. It works fine when I turn on in a ASP.NET web.config file, but when I trying to use in a WCF service that uses EF 6.1, it gets the following error
Exception: System.ServiceModel.ServiceActivationException: The service '/DataAccessService.svc' cannot be activated due to an exception during compilation. The exception message is: The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception..The more telling message is from the inner exception: Unrecognized element 'interceptors'. web.config line 123)
NOTE: based on the first answer, I am providing more elements from the web.config
<configuration>
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
.
.
.
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
<interceptors>
<interceptor type="System.Data.Entity.Infrastructure.Interception.DatabaseLogger, EntityFramework">
<parameters>
<parameter value="C:\tmp\DataAccessLogOutput.txt" />
</parameters>
</interceptor>
</interceptors>
</entityFramework>

Answer 1

You didn't register the Entity Frame Work configuration section that defines <interceptors> correctly. In other words do you have this at the top of your config file?
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework"
type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.3.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
</configSections>
</configuration>