bitwarden-estensione-browser/config/development.json

{
    "proxyApi": "http://localhost:4000",
    "proxyIdentity": "http://localhost:33656",
    "proxyEvents": "http://localhost:46273",
    "proxyNotifications": "http://localhost:61840",
    "allowedHosts": [],
    "urls": {
        "notifications": "http://localhost:61840"
    }
}