Object reference not set to an instance of an object.

System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at ASP._Page_WorkoutAnalysisPublic_cshtml.<>c__DisplayClassd.b__9() in c:\home\site\wwwroot\WorkoutAnalysisPublic.cshtml:line 413
   at System.Web.WebPages.WebPageBase.<>c__DisplayClassb.b__9(TextWriter tw)
   at System.Web.WebPages.WebPageBase.Write(HelperResult result)
   at ASP._Page__SiteLayoutPublic_cshtml.Execute() in c:\home\site\wwwroot\_SiteLayoutPublic.cshtml:line 190
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors)
   at System.Web.WebPages.WebPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.WebPages.WebPageBase.<>c__DisplayClass7.b__6(TextWriter writer)
   at System.Web.WebPages.WebPageBase.Write(HelperResult result)
   at System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body)
   at System.Web.WebPages.WebPageBase.PopContext()
   at System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContext context)
   at System.Web.WebPages.WebPageHttpHandler.HandleError(Exception e)
   at System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)