Runtime error because the error is?

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ASP.NET

Hello friends
I am a Web Designer
Error gives me a runtime error when the web user control that would add literals presenattion

<asp:Literal ID="litDeleteUser" runat="server" Text="|" />
<asp:HyperLink ID="lnkDeleteUser" runat="server" Text="Delete User"
    NavigateUrl="~/Pages/DeleteUser.aspx" CssClass="link" />

    <asp:Literal ID="litPresentation" runat="server" Text="|" />
<asp:HyperLink ID="lnkPresentation" runat="server" Text="Presentaton"
    NavigateUrl="~/Pages/Presentation.aspx" CssClass="link" />