To reproduce, basically add an unescaped character like `#` to the CloverConnector's `friendlyId`. <img width="1890" alt="screenshot 2018-04-19 16 37 19" src="https://user-images.githubusercontent.com/636899/39068972-8ef5fac0-44b4-11e8-83bb-1153e4c4702c.png"> Missing a call to `encodeURIComponent` when building the WS address.