Comment # 6 on bug 1222090 from Stakanov Schufter

Here from jounrnalctl:
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]: ImportError: cannot
import name 'Nitrokey3Device' from 'pynitrokey.nk3'
(/usr/lib/python3.11/site-packages/pynitrokey/nk3/__init__.py)
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]:     from
pynitrokey.nk3 import Nitrokey3Device
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]:   File
"/usr/lib/python3.11/site-packages/nitrokeyapp/gui.py", line 12, in <module>
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]:     from
nitrokeyapp.gui import GUI
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]:   File
"/usr/lib/python3.11/site-packages/nitrokeyapp/__main__.py", line 10, in
<module>
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]:     from
nitrokeyapp.__main__ import main
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]:   File
"/usr/bin/nitrokeyapp", line 5, in <module>
apr 14 09:31:07 silversurfer.fritz.box nitrokeyapp[22030]: Traceback (most
recent call last):

then you find later the following:
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        Connection not established yet
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        run
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        Connection not established yet
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        run
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        Connection not established yet
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        run
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        Connection not established yet
apr 14 09:31:07 silversurfer.fritz.box nitrokey-app[22029]: [Sun Apr 14
09:31:07 2024][DEBUG_L2]        run
apr 14 09:31:07 silversurfer.fritz.box systemd[21570]:
app-nitrokeyapp2@autostart.service: Failed with result 'exit-code'.
apr 14 09:31:07 silversurfer.fritz.box systemd[21570]:
app-nitrokeyapp2@autostart.service: Main process exited, code=exited,
status=1/FAILURE


The protocol of autostart in KDE says:

2024.04.14 09:31 app-nitrokey2@autostart.service:failed with result: exit-code
app-nitrokeyapp2@autostart.service: Main process exited,
code=exited,status=1/Failure
ImportError: cannot import name 'NitrokeyDevice' from
'pynitrokey.nk3'(/usr/lib/python3.11/site-packages/pynitrokey/nk3_init_.py)
from pynitorkey.nk3 import Nitrokey3Device
File "/usr/lib/python3.11/site-packages/nitrokeyapp/gui.py",line 10, in from
nitrokeyapp._main_import main
File "usr/bin/nitrokeyapp", line5, in Traceback (most recent calls):