The connection is not found error in auth0 - asp.net-mvc

Question

I am using auth0 to maintain users details. and I am following This article.
I downloaded project which is using default lock screen, and it's working fine, I am able to create user and login, logout.
When I try with custom login view, and when I try to login with my credentials, It's giving me error "The connection is not found".
I am not sure, Which connection I need to pass here.
Below is the code which I paste from mentioned article.
[HttpPost]
public async Task<ActionResult> Login(LoginViewModel vm, string returnUrl = null)
{
if (ModelState.IsValid)
{
try
{
AuthenticationApiClient client =
new AuthenticationApiClient(
new Uri($"https://{ConfigurationManager.AppSettings["auth0:Domain"]}/"));
var result = await client.AuthenticateAsync(new AuthenticationRequest
{
ClientId = ConfigurationManager.AppSettings["auth0:ClientId"],
Scope = "openid",
Connection = "Database-Connection", // Specify the correct name of your DB connection
Username = vm.EmailAddress,
Password = vm.Password
});
// Get user info from token
var user = await client.GetTokenInfoAsync(result.IdToken);
// Create claims principal
var claimsIdentity = new ClaimsIdentity(new[]
{
new Claim(ClaimTypes.NameIdentifier, user.UserId),
new Claim(ClaimTypes.Name, user.FullName ?? user.Email),
new Claim("http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider", "ASP.NET Identity", "http://www.w3.org/2001/XMLSchema#string")
}, DefaultAuthenticationTypes.ApplicationCookie);
// Sign user into cookie middleware
AuthenticationManager.SignIn(new AuthenticationProperties { IsPersistent = false }, claimsIdentity);
return RedirectToLocal(returnUrl);
}
catch (Exception e)
{
ModelState.AddModelError("", e.Message);
}
}
return View(vm);
}
Below is Error I am getting,
I am passing correct connection name in AuthenticationRequest also as below image,

Answer 1

You need to make sure that the Connection name specified in the AuthenticationRequest instance that you pass into AuthenticateAsync maps to an existing database connection within your Auth0 account.
More specifically, you're currently passing "Database-Connection"as the name of the connection and you need to ensure that either a connection with that name exists or change your code:
new AuthenticationRequest {
// ...
Connection = "Database-Connection",
Username = vm.EmailAddress,
Password = vm.Password
}