os.identity().projects().list() not working！！！

Hi，
when I execute this,I received an error message aboubt that json is not Perfect package in tags field
error message is that
through reference chain: org.openstack4j.openstack.identity.v3.domain.KeystoneProject$Projects["projects"]->java.util.ArrayList[0]->org.openstack4j.openstack.identity.v3.domain.KeystoneProject["tags"])