503 error hangfire controller fault

I runned some tasks, and in 1 time i got a error and my whole web api project has stopped working.
I got a 503 error. (every page in the web api gives a 503 error after this error)

I looked into elmah and seeing this error:
The controller for path ‘/hangfire/jquery-1.10.2.min.map’ was not found or does not implement IController. Details…

System.Web.HttpException (0x80004005): The controller for path ‘/hangfire/jquery-1.10.2.min.map’ was not found or does not implement IController.
at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType)
at System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName)
at System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory)
at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state)
at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state)
at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

When looking into the server iis, i see that the website is running but it’s application pool has stopped.