[keycloak-user] Can't the the customer-portal tutorial running correctly

Hello, I am new to keycloak and is having an issue to the the customer-portal tutorial running fully. After following all the instructions in the tutorial and running the customer-portal application, I received the following result: " Goto: products <http://localhost:8080/product-portal> | logout <http://localhost:8080/auth/realms/demo/protocol/openid-connect/logout?red... | manage acct <http://localhost:8080/auth/realms/demo/account?referrer=customer-portal> *Caller IDToken values* (*You can specify what is returned in IDToken in the customer-portal claims page in the admin console*: Username: lingvisa Email: lingvisa(a)gmail.com Full Name: martin First: martin Customer ListingThere was a failure processing request. You either didn't configure Keycloak properly, or maybe you just forgot to secure the database service? Status from database service invocation was: 401 " My Json file in database-service application: { "realm": "demo", "realm-public-key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAg3cFXIGDZzubQg+31kGsG6yYK+nsrkx4FB4BHnn9mCFjcan0LACZDt3rOqFuA2Z9J1sJsLACbrEZMgLoYl0XtnZyobs99lKrKJkSnwDi10ptQ24M1eYrqBs84VOv4t8xLLg34Em7033mPOXtEFVU0s1kcawZCD30vMwbYXyyOrK5peoLBoGeY9dUZLRPEJ/hrGZxkrWjNobd4Gkf5FTMdKAqTJtf/YqYsvBP5VrJT+yIuLBw8sq+cZKqBdAvb6nuOs6UEZpioEos9KWaTryxn0MYY1r75g9Udd0FSW+e+5Pm7+J+wDQVEkJ+tEXoiv9JADHc9BgHM6eqwzavpryPWwIDAQAB", "bearer-only": true, "ssl-required": "external", "resource": "database-service" } What might cause the 401 error message? Thank you. I am using the latest download "/keycloak-demo-1.7.0.Final" and admin console is a bit different from this in the tutorial. But there is no significant difference. In the keycloak console, I created the "database" client with only two fields filled: client protocol: openid-connect access type: barer-only Without any URLs used, as in customer-portal and product-portal. Thank you.