title: Sitecore 9.2 Helix ,How to use Assets, SitecoreExtension and Dependency Injection that exist in foundation layer of habitat
body: <p>I am beginner to development in sitecore using Helix Design Principle
  i started with blank project and added one feature in feature layer and one layout in project layer <a href="https://i.stack.imgur.com/9D4Dd.png" rel="nofollow noreferrer">as in this image </a> and it works fine.</p>
  <p>my issue when i tried to use asset module for styling purpose that exists in foundation layer of habitat to my project, it told me that it needs Dependency Injection and Sitecore Extension</p>
  <p>and when i try to load DependenyInjection inside my project , and deploy it with gulpfile <a href="https://i.stack.imgur.com/6gVaA.png" rel="nofollow noreferrer">as in this image</a>,the sitecore gave me that error</p>
  <pre><code>Server Error in '/' Application.
  Could not load file or assembly 'Sitecore.JavaScriptServices.AppServices, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
  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.IO.FileNotFoundException: Could not load file or assembly 'Sitecore.JavaScriptServices.AppServices, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
  
  Source Error:
  
  
  Line 187:            try
  Line 188:            {
  Line 189:                return assembly.GetExportedTypes();
  Line 190:            }
  Line 191:            catch (NotSupportedException)
  
  Source File: D:\Ejada Files\NewsEjada - Copy - Copy\src\Foundation\DependencyInjection\code\ServiceCollectionExtensions.cs    Line: 189
  
  Assembly Load Trace: The following information can be helpful to determine why the assembly 'Sitecore.JavaScriptServices.AppServices, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null' could not be loaded.
  
  
  WRN: Assembly binding logging is turned OFF.
  To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
  Note: There is some performance penalty associated with assembly bind failure logging.
  To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].
  
  Stack Trace:
  
  
  [FileNotFoundException: Could not load file or assembly 'Sitecore.JavaScriptServices.AppServices, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.]
     System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes) +0
     System.Reflection.RuntimeAssembly.GetExportedTypes() +32
     Sitecore.Foundation.DependencyInjection.ServiceCollectionExtensions.GetExportedTypes(Assembly assembly) in D:\Ejada Files\NewsEjada - Copy - Copy\src\Foundation\DependencyInjection\code\ServiceCollectionExtensions.cs:189
  
  [InvalidOperationException: Unable to load types from assembly Sitecore.XA.JSS.Foundation.Integration, Version=5.9.0.0, Culture=neutral, PublicKeyToken=null. Could not load file or assembly 'Sitecore.JavaScriptServices.AppServices, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.]
     Sitecore.Foundation.DependencyInjection.ServiceCollectionExtensions.GetExportedTypes(Assembly assembly) in D:\Ejada Files\NewsEjada - Copy - Copy\src\Foundation\DependencyInjection\code\ServiceCollectionExtensions.cs:210
     System.Linq.&lt;SelectManyIterator&gt;d__17`2.MoveNext() +265
     System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +287
     System.Linq.WhereEnumerableIterator`1.MoveNext() +255
     Sitecore.Foundation.DependencyInjection.ServiceCollectionExtensions.AddClassesWithServiceAttribute(IServiceCollection serviceCollection, Assembly[] assemblies) in D:\Ejada Files\NewsEjada - Copy - Copy\src\Foundation\DependencyInjection\code\ServiceCollectionExtensions.cs:39
     Sitecore.Foundation.DependencyInjection.ServiceCollectionExtensions.AddClassesWithServiceAttribute(IServiceCollection serviceCollection, String[] assemblyFilters) in D:\Ejada Files\NewsEjada - Copy - Copy\src\Foundation\DependencyInjection\code\ServiceCollectionExtensions.cs:27
     Sitecore.Foundation.DependencyInjection.Infrastructure.MvcControllerServicesConfigurator.Configure(IServiceCollection serviceCollection) in D:\Ejada Files\NewsEjada - Copy - Copy\src\Foundation\DependencyInjection\code\Infrastructure\MvcControllerServicesConfigurator.cs:12
     Sitecore.DependencyInjection.BaseServicesConfiguratorFactory.Configure(IServiceCollection serviceCollection) +171
     Sitecore.DependencyInjection.BaseServicesConfiguratorFactory.Configure(IServiceCollection serviceCollection) +171
     Sitecore.DependencyInjection.BaseServiceProviderBuilder.ConfigureServiceCollection() +142
     Sitecore.DependencyInjection.ServiceLocator.ConfigureServiceProvider() +225
     Sitecore.DependencyInjection.ServiceLocator.get_ServiceProvider() +513
     Sitecore.DependencyInjection.SitecorePerRequestScopeModule..ctor() +13
  
  [TargetInvocationException: Exception has been thrown by the target of an invocation.]
     System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean&amp; canBeCached, RuntimeMethodHandleInternal&amp; ctor, Boolean&amp; bNeedSecurityCheck) +0
     System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark&amp; stackMark) +142
     System.Activator.CreateInstance(Type type, Boolean nonPublic) +107
     System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark&amp; stackMark) +1476
     System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) +186
     System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture) +28
     System.Web.HttpRuntime.CreateNonPublicInstance(Type type, Object[] args) +80
     System.Web.HttpApplication.BuildIntegratedModuleCollection(List`1 moduleList) +234
     System.Web.HttpApplication.GetModuleCollection(IntPtr appContext) +1153
     System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +139
     System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +168
     System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +277
     System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +369
  
  [HttpException (0x80004005): Exception has been thrown by the target of an invocation.]
     System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +532
     System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +111
     System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +724
  </code></pre>