Failed authentication attempts are made due to the user using Gerrit HTTP Credentials instead of real password when interacting with Gerrit (through Gerrit Code Review Plugin).

Gerrit generally accepts two kinds of password, the password provided by underlying authentication system (e.g. LDAP) and the HTTP Credential provided through the UI. The latter does not work when the user logs in through the ordinary login page, and is only intended for API requests.

Thus, this plugin should instruct the Gerrit Rest Java Client not to use regular HTTP login which would not work.