2016-03-29 23:37:21 ERROR juju.worker.dependency engine.go:509 "uniter" manifold worker returned unexpected error: preparing operation "install cs:trusty/juju-gui-52": failed to download charm "cs:trusty/juju-gui-52" from ["https://10.54.1.2:17070/model/4a0e0086-e90b-498a-850c-0562c96d7711/charms?file=%2A&url=cs%3Atrusty%2Fjuju-gui-52"]: cannot download "https://10.54.1.2:17070/model/4a0e0086-e90b-498a-850c-0562c96d7711/charms?file=%2A&url=cs%3Atrusty%2Fjuju-gui-52": bad http response: 400 Bad Request