[ArgumentOutOfRangeException: Length cannot be less than zero.
Parameter name: length]
System.String.Substring(Int32 startIndex, Int32 length) +13148884
ASP._Page_Proxys_cshtml.Execute() in h:\root\home\mijnip-001\www\wwwroot\Proxys.cshtml:85
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +198
System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +69
System.Web.WebPages.WebPage.ExecutePageHierarchy() +131
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +78
System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext) +116
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