TPLink WR841N - Error setting up platform legacy tplink_router

[ReneHlouzek]

Hello,
can you help me with this issue?
Device tracker doesnt work with my router.

Logger: homeassistant.components.device_tracker
Source: custom_components/tplink_router/device_tracker.py:451
Integration: Device tracker (documentation, issues)
First occurred: 10:10:07 AM (1 occurrences)
Last logged: 10:10:07 AM

Error setting up platform legacy tplink_router
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/components/device_tracker/legacy.py", line 282, in async_setup_legacy
scanner = await hass.async_add_executor_job(
File "/usr/local/lib/python3.10/concurrent/futures/thread.py", line 58, in run
result = self.fn(*self.args, **self.kwargs)
File "/config/custom_components/tplink_router/device_tracker.py", line 56, in get_scanner
scanner = cls(config[DOMAIN])
File "/config/custom_components/tplink_router/device_tracker.py", line 83, in init
self.success_init = self._update_info()
File "/config/custom_components/tplink_router/device_tracker.py", line 451, in _update_info
session.get(base_url, headers=header)
File "/usr/local/lib/python3.10/site-packages/requests/sessions.py", line 600, in get
return self.request("GET", url, **kwargs)
File "/usr/local/lib/python3.10/site-packages/requests/sessions.py", line 573, in request
prep = self.prepare_request(req)
File "/usr/local/lib/python3.10/site-packages/requests/sessions.py", line 484, in prepare_request
p.prepare(
File "/usr/local/lib/python3.10/site-packages/requests/models.py", line 369, in prepare
self.prepare_headers(headers)
File "/usr/local/lib/python3.10/site-packages/requests/models.py", line 491, in prepare_headers
check_header_validity(header)
File "/usr/local/lib/python3.10/site-packages/requests/utils.py", line 1037, in check_header_validity
raise InvalidHeader(
requests.exceptions.InvalidHeader: Header part ('User-Agent') from {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:53.0) Gecko/20100101 Firefox/53.0'} must be of type str or bytes, not <class 'multidict._multidict.istr'>

Thank you