[Error]: didn't init GPT service: websocket: bad handshake

[JasonHXiang]

hub.go:49

// NewConnect create new websocket connection
func (h *Hub) NewConnect() (*websocket.Conn, error) {
conn, _, err := websocket.DefaultDialer.Dial(h.wssUrl.String(), Helpers.GetHeaders(h.headers))

It occurs an error after I followed the example on Readme - Use as a library.

websocket cannot be dialed up.

Please help this out.