vedams@ubuntu-juju:~/charms/biarca$ sudo juju deploy  cs:juju-gui-134 --series xenial
panic: unknown channel "candidate"

goroutine 1 [running]:
panic(0x1a24400, 0xc8205a0380)
        /usr/lib/go-1.6/src/runtime/panic.go:481 +0x3e6
gopkg.in/juju/charmrepo%2ev2-unstable.bestChannel(0xc8202b7d40, 0xc82047c1e0, 0x3, 0x4, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/gopkg.in/juju/charmrepo.v2-unstable/charmstore.go:273 +0x383
gopkg.in/juju/charmrepo%2ev2-unstable.(*CharmStore).ResolveWithChannel(0xc820268448, 0xc82028f0e0, 0xc8202da270, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/gopkg.in/juju/charmrepo.v2-unstable/charmstore.go:248 +0x6e9
github.com/juju/juju/cmd/juju/application.(*charmURLResolver).resolve(0xc8202da2b0, 0xc82028f0e0, 0xc82028f0e0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7fb933b93028, 0x0, ...)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/juju/application/store.go:101 +0x1d7
github.com/juju/juju/cmd/juju/application.(*DeployCommand).deployCharmOrBundle(0xc82030a1c0, 0xc8201bfbd0, 0xc820290810, 0xc82039aa00, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/juju/application/deploy.go:403 +0xd1f
github.com/juju/juju/cmd/juju/application.(*DeployCommand).Run(0xc82030a1c0, 0xc8201bfbd0, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/juju/application/deploy.go:744 +0x1e0
github.com/juju/juju/cmd/modelcmd.(*modelCommandWrapper).Run(0xc82045c7e0, 0xc8201bfbd0, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/modelcmd/modelcommand.go:263 +0x4f
github.com/juju/juju/cmd/modelcmd.(*baseCommandWrapper).Run(0xc820361040, 0xc8201bfbd0, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/modelcmd/base.go:268 +0xd4
github.com/juju/cmd.(*SuperCommand).Run(0xc820402ea0, 0xc8201bfbd0, 0x0, 0x0)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/cmd/supercommand.go:456 +0x688
github.com/juju/cmd.Main(0x7fb933b62c18, 0xc820402ea0, 0xc8201bfbd0, 0xc82000a100, 0x4, 0x4, 0x4b22fa)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/cmd/cmd.go:280 +0x2f0
github.com/juju/juju/cmd/juju/commands.main.Run(0x2b81d38, 0xc82000a0f0, 0x5, 0x5, 0x2510750)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/juju/commands/main.go:149 +0x5bb
github.com/juju/juju/cmd/juju/commands.Main(0xc82000a0f0, 0x5, 0x5, 0xc820000180)
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/juju/commands/main.go:114 +0x48
main.main()
        /build/juju-core-HJbo6E/juju-core-2.0~beta15/_build/src/github.com/juju/juju/cmd/juju/main.go:27 +0x3b