Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Unknown server tag 'asp:ToolkitScriptManager'.
Source Error:
Line 4: <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
Line 5:
Line 6: <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
Line 7: </asp:ToolkitScriptManager>
Line 8:
Source File: /WaterHeater.aspx Line: 6
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4682.0