asp.net – System.EntryPointNotFoundException MVC5

Entry point was not found. 
  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.EntryPointNotFoundException: Entry point was not found.

Source Error: 


 An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 



[EntryPointNotFoundException: Entry point was not found.]
   System.Web.Mvc.DependencyResolver.InnerSetResolver(IDependencyResolver resolver) +289
   Rabobank.Risk.LicwidWorkflow.UI.UnityConfig.RegisterComponents() +125
   Rabobank.Risk.LicwidWorkflow.UI.MvcApplication.Application_Start() +30

[HttpException (0x80004005): Entry point was not found.]
   System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context,HttpApplication app) +12602733
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext,HttpContext context,MethodInfo[] handlers) +175
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state,MethodInfo[] handlers,IntPtr appContext,HttpContext context) +304
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext,HttpContext context) +404
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): Entry point was not found.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12619780
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr,HttpContext context) +12459397

我不知道为什么会这样.任何指针将不胜感激