[bug] EDUPAGE unexpected login error: list index out of range

[mgrfilipmarek]

Describe the bug
login error and after that next issues with getStudents and unidecode.
(I guess) this issue occurs in this scenario:

• HA with edupage integration is down for some time
• login session is time-outed
• login method throws "list index out of range"
• get_students() throws NotLoggedInException
• unidecode throws error because student_name = unknown

This error originated from a custom integration.
Logger: custom_components.homeassistantedupage.homeassistant_edupage
Source: custom_components/homeassistantedupage/homeassistant_edupage.py:45
integration: homeassistantedupage (documentation, issues)
First occurred: 8:07:46 AM (9 occurrences)
Last logged: 8:25:10 AM
EDUPAGE unexpected login error: list index out of range

This error originated from a custom integration.
Logger: custom_components.homeassistant_edupage
Source: custom_components/homeassistantedupage/init.py:133
integration: homeassistant_edupage
First occurred: 8:11:03 AM (6 occurrences)
Last logged: 8:25:12 AM
INIT Failed to fetch timetable: EDUPAGE error updating get_students() data from API:

Logger: homeassistant.components.sensor
Source: helpers/entity_platform.py:365
integration: Sensor (documentation, issues)
First occurred: 8:22:04 AM (2 occurrences)
Last logged: 8:25:12 AM
Error while setting up homeassistantedupage platform for sensor
Traceback (most recent call last):
File "/workspaces/core/homeassistant/helpers/entity_platform.py", line 365, in _async_setup_platform
await asyncio.shield(awaitable)
File "/workspaces/core/config/custom_components/homeassistantedupage/sensor.py", line 45, in async_setup_entry
notify = EduPageNotificationSensor(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/workspaces/core/config/custom_components/homeassistantedupage/sensor.py", line 121, in init
self.student_name = unidecode(student_name).replace(' ', '').lower()
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/vscode/.local/ha-venv/lib/python3.12/site-packages/unidecode/init.py", line 60, in unidecode_expect_ascii
bytestring = string.encode('ASCII')
^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'encode'

Screenshots

[bbirnbach]

• HA with edupage integration is down for some time

Without taking a deeper look I'm pretty sure that this is a problem because of the saved session (which is needed to not handle 2FA). I think the session is timed out and needs a re-login. For users without 2FA it could be a solution to catch that specific error and continue with "normal" login.
Sounds like the whole login process has to be refactored :/