Identity Server - Authorization code flow issue - Login page - authorization

Question

The issue I am facing is after successful login from my MVC app to ID Server, I am not getting redirected to the applications secure page. instead, the identity server login page reappears.
I created the ID server using hte following template.
dotnet new is4inmem -n IdentityServerSample
My ID Server runs in port 5000 (http only)
I have another MVC application, which runs in port 5006 (http only).
my client settings and scope settings in ID Server config file is as below..
..., new Client
{
ClientId = "AuthCode_Flow_Client",
ClientSecrets = { new Secret("secret".Sha256()) },
AllowedGrantTypes = GrantTypes.Code,
RedirectUris = { "http://localhost:5006/signin-oidc" },
FrontChannelLogoutUri = "https://localhost:5006/signout-oidc",
PostLogoutRedirectUris = { "https://localhost:5006/signout-callback-oidc" },
AllowOfflineAccess = true,
AllowedScopes = { "openid", "profile", "ValuesAPI_ReadOnly" }
},...
public static IEnumerable<ApiScope> ApiScopes =>
new ApiScope[]
{
new ApiScope("scope1"),
new ApiScope("scope2"),
new ApiScope("ValuesAPI_ReadOnly"),
};
The configure serivice method in my MVC is as below.
services.AddAuthentication(opts =>
{
opts.DefaultScheme = "Cookies";
opts.DefaultChallengeScheme = "oidc";
})
.AddCookie("Cookies")
.AddOpenIdConnect("oidc", opts =>
{
opts.Authority = "http://localhost:5000";
opts.RequireHttpsMetadata = false;
opts.ClientId = "AuthCode_Flow_Client";
opts.ClientSecret = "secret";
opts.SaveTokens = true;
opts.ResponseType = "code";
});
In my pipeline, I have added the UseAuthentication and UseAuthorization() middlewares.
ISSUE
When I hit a secure page in my MVC application, I get redirected to ID SErver login page. After giving valid credentials (bob / bob), I dont see any errors in id server console log but still I am getting redirected ot login page itself.
Any suggestions.