My master page not load

See more:

C#3.5

<%@ Page Title="" Language="C#" MasterPageFile="~/Include/Master/Master.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<br /><br /><br /><br /><br /><br />
<div style="text-align:center; color:Red; font-size:medium;" id="dvMsg" runat="server"></div>
</asp:Content>

What I have tried:

After login we redirect the default page
as

Response.Redirect("default.aspx", false);

same code working on another computer application in Visual studio 2017
please help any one