Gardena smart system + Home assistant?

Hi Tobias, i did setup everything according to the readme file

Unfortunately I get response notification after reboot:
Invalid config
The following integrations and platforms could not be set up:
Gardena
Please check your config.

I installed the plugin,
stored the credentials inside secret file,
generated the api key and stored in configurations

Can you please assist?

Logfile:

2020-05-04 15:53:58 WARNING (MainThread) [homeassistant.util.async_] Detected I/O inside the event loop. This is causing stability issues. Please report issue to the custom component author for gardena doing I/O at custom_components/gardena/init.py, line 109: self.smart_system.update_devices(self.smart_system.locations[location_id])
2020-05-04 15:53:58 ERROR (MainThread) [homeassistant.setup] Error during setup of component gardena
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/setup.py”, line 171, in _async_setup_component
hass, processed_config
File “/config/custom_components/gardena/init.py”, line 63, in async_setup
hass, config[DOMAIN], SmartSystem
File “/config/custom_components/gardena/init.py”, line 109, in init
self.smart_system.update_devices(self.smart_system.locations[location_id])
File “/usr/local/lib/python3.7/site-packages/gardena/smart_system.py”, line 170, in update_devices
if len(response_data[“data”][“relationships”][“devices”][“data”]) < 1:
KeyError: ‘relationships’

Thank you