Ubuntu chromium and web ide

Well, i try using my little laptop, still on ubuntu 19.04, and while i didnt face same issue, i still encounter new one :

Loaded code from storage.
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
serviceworker> active
BT> ERROR: NotFoundError: User cancelled the requestDevice() chooser.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.
>>> Connecting...
Set Slow Write = true
>>> Connecting to Pixl.js c734
BT>  Device Name:       Pixl.js c734
BT>  Device ID:         MckzoCJ/zg3Wdi0vtHM5mg==
BT> ERROR: NetworkError: Connection failed for unknown reason.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.