[Python] Google Calendar API on EC2 (AWS) - webbrowser.Error: could not locate runnable browser

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', 'https://www.googleapis.com/auth/calendar'] )
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!!

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