5. Use the incorrect password and username/email of the user to log in to the UI and check the error message.
6. On a Docker client host, use `docker login <harbor_host>` command to verify the user can log in by either the **username** or **email** . (check both)
7. Use `docker login <harbor_host>` command to log in with incorrect password by either the **username** or **email** .
* The error message in Step 5 should not show which input value is incorrect. It should only display the username(email) and password combination is incorrect.