timetable_helper.get_timetable() throws error

I try to use your code as shown in the demonstration. Is it still maintained?

When I run

from deutsche_bahn_api.api_authentication import ApiAuthentication
from deutsche_bahn_api.station_helper import StationHelper
from deutsche_bahn_api.timetable_helper import TimetableHelper

CLIENT_ID = 
CLIENT_API = 

api = ApiAuthentication(CLIENT_ID, CLIENT_API)
print(api.test_credentials())

station_helper = StationHelper()
found_stations = station_helper.find_stations_by_name("Ulm Hbf")

station = found_stations[0]

print(found_stations)
print(type(found_stations))

timetable_helper = TimetableHelper(station, CLIENT_API)
trains_in_this_hour = timetable_helper.get_timetable()

print(type(trains_in_this_hour))
print(trains_in_this_hour)

I get

True
[Station(EVA_NR=8000170, DS100='TU', IFOPT='de:08421:1008', NAME='Ulm Hbf', Verkehr='FV', Laenge='9,982227', Breite='48,399437', Betreiber_Name='DB Station und Service AG', Betreiber_Nr=6323, Status='')]
<class 'list'>
Traceback (most recent call last):
  File "/home/pi/python/bahn_api/main.py", line 20, in <module>
    trains_in_this_hour = timetable_helper.get_timetable()
  File "/home/pi/.local/lib/python3.9/site-packages/deutsche_bahn_api/timetable_helper.py", line 49, in get_timetable
    trains = elementTree.fromstringlist(self.get_timetable_xml(hour))
  File "/home/pi/.local/lib/python3.9/site-packages/deutsche_bahn_api/timetable_helper.py", line 35, in get_timetable_xml
    headers=self.api_authentication.get_headers()
AttributeError: 'str' object has no attribute 'get_headers'

It seems something might have changed in the API?

Tutorialwork / deutsche_bahn_api

timetable_helper.get_timetable() throws error #7