The WebSocket is closed before the connection is established error message indicates that some client code, or other mechanism, has closed the websocket connection before the connection was fully established.
If the connection eventually succeeds then the message can be safely ignored.
If you are using Google Chrome you may need to restart your browser. We've seen that after Chrome updates there is sometimes a network issue which stops WebSocket connections from succeeding.
If you are still having issues please contact us using the button below.