Cannot use a leading .. to exit above the top directory. Error

`Cannot use a leading .. to exit above the top directory.`

`[HttpException (0x80004005): Cannot use a leading .. to exit above the top directory.]
   System.Web.Util.UrlPath.ReduceVirtualPath(String path) +9985452
   System.Web.Util.UrlPath.Reduce(String path) +50
   System.Web.Util.UrlPath.Combine(String appPath, String basepath, String relative) +217
   System.Web.UI.Control.ResolveClientUrl(String relativeUrl) +266
   System.Web.UI.HtmlControls.HtmlLink.RenderAttributes(HtmlTextWriter writer) +74
   System.Web.UI.HtmlControls.HtmlLink.Render(HtmlTextWriter writer) +41
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +66
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +128
   System.Web.UI.HtmlControls.HtmlHead.RenderChildren(HtmlTextWriter writer) +21
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +32
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +66
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +128
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +13
   System.Web.UI.Control.Render(HtmlTextWriter writer) +12
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +66
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +128
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +13
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +66
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1303
`

My project was working fine and now i do not know what happen, every time i navigate it gives me the error.

I tried using the full link 1. <a class="nav-link" href=" http://localhost:64406/Test/Product.aspx">Add Products</a>

2. <a class="nav-link" href="../../Test/Product.aspx">Add Products</a>

3. <a class="nav-link" href="../Test/Product.aspx">Add Products</a>

4. <a class="nav-link" href="~/Test/Product.aspx">Add Products</a>
5. <a class="nav-link" href="Test/Product.aspx">Add Products</a>

Nothing works.

I searched everywhere to try and find the solution but nothing solved my problem. also visited this link Cannot use a leading ../ to exit above the top directory but it could not solve my problem.

This will help everyone who struggled to get the solution for this problem, I solved this problem by replacing all the links <a class="nav-link" href="../Test/Product.aspx">Add Products</a> WITH <a class="nav-link" href="/Test/Product.aspx">Add Products</a>

This includ all the CSS and Js links <link rel="stylesheet" href="/css/style.css"/>

Don't just replace 1 link, replace all the links in your MasterPage.