bitwarden-browser/config/development.json

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