Authorization code is not generating after deploying on AppService

Question

I have a Asp.net MVC web application that uses OpenIdConnect Auth code flow for user authentication. The code is working fine when we are debugging locally. We noticed that Authorization code is not generating after deploying in AppService.

Below is my code snippet -

app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);

app.UseCookieAuthentication(new CookieAuthenticationOptions
{
    // ...
    CookieManager = new SystemWebCookieManager(),
});


app.UseOpenIdConnectAuthentication(
    new OpenIdConnectAuthenticationOptions
    {
        ClientId = ConfigHelper.ClientId,
        Authority = $"
        PostLogoutRedirectUri = ConfigHelper.PostLogoutRedirectUri,
        RedirectUri = ConfigHelper.PostLogoutRedirectUri,
        Scope = ConfigHelper.AppScope,
        TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuer = false,
        },
        CookieManager = new SystemWebCookieManager(),
        Notifications = new OpenIdConnectAuthenticationNotifications
        {
            AuthorizationCodeReceived = OnAuthorizationCodeReceivedAsync,
            AuthenticationFailed = OnAuthenticationFailedAsync
        }
    });