Ubuntu chromium and web ide

I added -E to bluetoothd command to enable experimental mode:

Loaded code from storage.
serviceworker> active
Handling URL "https://www.espruino.com/ide/"
Couldn't connect to wss://localhost:31234 - disabling websockets for this session
ERROR: getURL("/serial/ports") error : Not Found
/serial/ports doesn't exist - disabling WebSocket support
ERROR: serial_frame: getPorts timeout, disabling
>>> Connecting...
Set Slow Write = true
>>> Connecting to Pixl.js c734
BT>  Device Name:       Pixl.js c734
BT>  Device ID:         MckzoCJ/zg3Wdi0vtHM5mg==
>>> Connected to BLE
BT> Connected
BT> Disconnected (gattserverdisconnected)
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.
BT> ERROR: NetworkError: GATT Server is disconnected. Cannot retrieve services. (Re)connect first with `device.gatt.connect`.