Bot not start when start_embedded_server: false

[earthchie]

Expected Behavior

Bot should run

Actual Behavior

Bot not start

config.json

"websocket": {
    "start_embedded_server": false,
    "server_url": "127.0.0.1:4000"
}

full config http://pastebin.com/QpVLLGrq

Output when issue occurred

no error message displayed

Steps to Reproduce

just set "start_embedded_server": false,

Other Information

OS: Mac OS X El Capitan 10.11.6
Branch: dev
Git Commit: a443126
Python Version: 2.7.12