Azure AAD B2C 样品 API 问题

Question

I have an issue with the Azure sample AAD B2C API (all the steps are followed) - code taken from: AAD B2C
Note: Also tested with another sample AAD code: AAD and it worked without any issues.
The issue (issue for AAD B2C) is on the API and when I try to connect to the localhost of the api, the following error pops up: I don't understand what I am missing?
Thank you

Answer 1

The issue is from the appsettings, but I was misguided from the steps that I was following from the AAD B2C link. In the page says:
"Find the key Instance and replace the existing value with your Azure AD B2C tenant name."
"Find the key Domain and replace the existing value with your Azure AD B2C tenant name."
So in my case I was just adding the names of the tenant.

In the appsettings the correct way is:

"AzureAdB2C": {
    "Instance": "https://TENANT-NAME.b2clogin.com/",
    "ClientId": "ID from the App registration of the API",
    "Domain": "TENANT-NAME.onmicrosoft.com",
    "SignUpSignInPolicyId": "B2C_1_user_flow",
    "EditProfilePolicyId": "B2C_1_edit_user_flow"
  }

Thank you Tiny Wang for the guidance.