I am developing a Django App where a user can access his Google Calendar using this script

credentials = None
token = os.path.join(folder, "token.pickle")

if os.path.exists(token):
        with open(token, 'rb') as tk:
                credentials = pickle.load(tk)

if not credentials or not credentials.valid:
    if credentials and credentials.expired and credentials.refresh_token:
         credentials.refresh(Request())
    else: 
        credentials = os.path.join(folder, "credentials.json")
        flow = InstalledAppFlow.from_client_secrets_file( credentials, scopes=['openid', ''] )
        flow.authorization_url(
            # Recommended, enable offline access so that you can refresh an access token without
            # re-prompting the user for permission. Recommended for web server apps.
            access_type='offline',
            # Optional, enable incremental authorization. Recommended as a best practice.
            include_granted_scopes='true',
            # # Optional, if your application knows which user is trying to authenticate, it can use this
            # # parameter to provide a hint to the Google Authentication Server.
            login_hint=useremail,
            # Optional, set prompt to 'consent' will prompt the user for consent
            prompt='consent')

        flow.run_local_server()
        credentials = flow.credentials

    with open(token, 'wb') as tk:
        pickle.dump(credentials, tk)

service = build('calendar', 'v3', credentials = credentials)

When I test it on my local machine everything works fine. However, I run it on a EC2 instance on AWS I get this error:

flow.run_local_server()
  File "/home/ubuntu/webapp/lib/python3.12/site-packages/google_auth_oauthlib/flow.py", line 447, in run_local_server
    webbrowser.get(browser).open(auth_url, new=1, autoraise=True)
    ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/webbrowser.py", line 66, in get
    raise Error("could not locate runnable browser")
webbrowser.Error: could not locate runnable browser

It is breaking on the line flow.run_local_server(). Any idea of what I am doing wrong?

Thank you!!