Wcf service Failed to invoke the service

I have Failed to invoke the service Error.

Idk what's the problem is. but Always when i run the wcf and invoke on my categorielijst() i get failed to invoke the service.

Someone knows the problem ?

my full wcf app

<?xml version="1.0" encoding="utf-8"?>
<configuration>

  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://ift.tt/1eigFsq -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="SpionshopEntities" connectionString="metadata=http://res*/Spionshop.csdl|res*/Spionshop.ssdl|res*/Spionshop.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\sqlexpress;initial catalog=Spionshop;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
  </connectionStrings>
  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" />
  </system.web>
  <!-- When deploying the service library project, the content of the config file must be added to the host's 
  app.config file. System.Configuration does not support config files for libraries. -->
  <system.serviceModel>
    <services>
      <service name="WcfServiceLib.CategorieService" >
        <endpoint address="soap" binding="basicHttpBinding" contract="WcfServiceLib.ICategorieService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="" binding="webHttpBinding" contract="WcfServiceLib.ICategorieService" behaviorConfiguration="restfulbehavior">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8733/Design_Time_Addresses/WcfServiceLib/CategorieService/" />
          </baseAddresses>
        </host>
      </service>







    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, 
          set the values below to false before deployment -->
          <serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" />
          <!-- To receive exception details in faults for debugging purposes, 
          set the value below to true.  Set to false before deployment 
          to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="True" />
        </behavior>
      </serviceBehaviors>

      <!--Behavior voor REst toegevoegd, in WCF spreken we van WebHttp-->
      <endpointBehaviors>
        <behavior name="restfulbehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
    </behaviors>
  </system.serviceModel>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
</configuration>