ROW
{
  "date": "2020-02-26T05:53:04.226Z",
  "type": "fsa",
  "description": "Login required",
  "client_id": "XXXXXX",
  "client_name": "XXXX",
  "ip": "121.240.64.149",
  "user_agent": "Chrome 80.0.3987 / Windows 10.0.0",
  "details": {
    "body": {},
    "qs": {
      "client_id": "XXXX",
      "redirect_uri": "http://localhost:4200",
      "audience": "https://XXX/api/",
      "scope": "openid profile email",
      "response_type": "code",
      "response_mode": "web_message",
      "state": "YjlxbFFtZFkyVGRrVW5VMGNlNndqXzRfWkU5eWRGTVJiQzlySW9kfkVZNg==",
      "nonce": "RqjQZtRXgpbVBrFWJiAik47Y05MPLLV6EjlhbT.vQ9S",
      "code_challenge": "X3cKMBYWX8kbe_9n88ttmIesJ8iRHuCroARHHAMojPc",
      "code_challenge_method": "S256",
      "prompt": "none",
      "auth0Client": "eyJuYW1lIjoiYXV0aDAtc3BhLWpzIiwidmVyc2lvbiI6IjEuNi40In0="
    },
    "connection": null,
    "error": {
      "message": "Login required",
      "oauthError": "login_required",
      "type": "oauth-authorization"
    }
  },
  "hostname": "XXXX.auth0.com",
  "audience": "https://XXX/api/",
  "scope": [
    "openid",
    "profile",
    "email"
  ],
  "auth0_client": {
    "name": "auth0-spa-js",
    "version": "1.6.4"
  },
  "log_id": "90020200226055307472000560581267795498963687180723028066",
  "_id": "90020200226055307472000560581267795498963687180723028066",
  "isMobile": false
}

---------------
Context Data

{
  "body": {},
  "qs": {
    "client_id": "XXXX",
    "redirect_uri": "http://localhost:4200",
    "audience": "https://XXX/api/",
    "scope": "openid profile email",
    "response_type": "code",
    "response_mode": "web_message",
    "state": "YjlxbFFtZFkyVGRrVW5VMGNlNndqXzRfWkU5eWRGTVJiQzlySW9kfkVZNg==",
    "nonce": "RqjQZtRXgpbVBrFWJiAik47Y05MPLLV6EjlhbT.vQ9S",
    "code_challenge": "X3cKMBYWX8kbe_9n88ttmIesJ8iRHuCroARHHAMojPc",
    "code_challenge_method": "S256",
    "prompt": "none",
    "auth0Client": "eyJuYW1lIjoiYXV0aDAtc3BhLWpzIiwidmVyc2lvbiI6IjEuNi40In0="
  },
  "connection": null,
  "error": {
    "message": "Login required",
    "oauthError": "login_required",
    "type": "oauth-authorization"
  }
}

-------------------
when I added log for auth0Client$ (subscribe ) can see below in console log
e {options: {…}, DEFAULT_SCOPE: "openid profile email", cache: e, transactionManager: e, domainUrl: "https://XXXX.auth0.com", …}
options:
domain: "XXXX.auth0.com"
client_id: "XXXX"
redirect_uri: "http://localhost:4200"
audience: "https://x.XXXX.net/api/"
__proto__: Object
DEFAULT_SCOPE: "openid profile email"
cache: e {cache: {…}}
transactionManager: e {transactions: {…}}
domainUrl: "https://XXXX.auth0.com"
tokenIssuer: "https://XXXX.auth0.com/"
__proto__: Object