Like:
E: The value 'bookworm-backports' is invalid for APT::Default-Release as such a release is not available in the sources
E: The value 'bookworm-security' is invalid for APT::Default-Release as such a release is not available in the sources
E: The value 'bookworm-updates' is invalid for APT::Default-Release as
such a release is not available in the sources
But anyway « The plugin does not support this anymore. » : bc6450d8eb