UnhandledProtocolError: Failed to fetch reports: None

[malmeloo]

As of recently, you may occasionally run into the following error:

Traceback (most recent call last):
  File "/home/mike/Projects/FindMy.py/examples/airtag.py", line 61, in <module>
    sys.exit(main(args.airtag_path))
             ~~~~^^^^^^^^^^^^^^^^^^
  File "/home/mike/Projects/FindMy.py/examples/airtag.py", line 43, in main
    location = acc.fetch_location(airtag)
  File "/home/mike/Projects/FindMy.py/findmy/reports/account.py", line 1171, in fetch_location
    hist = self.fetch_location_history(keys)
  File "/home/mike/Projects/FindMy.py/findmy/reports/account.py", line 1139, in fetch_location_history
    return self._evt_loop.run_until_complete(coro)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
  File "/home/mike/.local/share/uv/python/cpython-3.13.2-linux-x86_64-gnu/lib/python3.13/asyncio/base_events.py", line 725, in run_until_complete
    return future.result()
           ~~~~~~~~~~~~~^^
  File "/home/mike/Projects/FindMy.py/findmy/reports/account.py", line 735, in fetch_location_history
    return await self._reports.fetch_location_history(keys)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/mike/Projects/FindMy.py/findmy/reports/reports.py", line 387, in fetch_location_history
    return await self._fetch_accessory_reports(device, only_latest=True)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/mike/Projects/FindMy.py/findmy/reports/reports.py", line 481, in _fetch_accessory_reports
    ret |= await _fetch()
           ^^^^^^^^^^^^^^
  File "/home/mike/Projects/FindMy.py/findmy/reports/reports.py", line 440, in _fetch
    new_reports: list[LocationReport] = await self._account.fetch_raw_reports(
                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        [(list(cur_keys_primary), (list(cur_keys_secondary)))]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/mike/Projects/FindMy.py/findmy/reports/account.py", line 692, in fetch_raw_reports
    raise UnhandledProtocolError(msg)
findmy.errors.UnhandledProtocolError: Failed to fetch reports: None

This appears to be caused by a change on Apple's side. As of v0.9.3, FindMy.py will automatically re-fire the request if it detects this error. However, this is very much a band-aid fix; the real underlying issue has not been identified yet.

[malmeloo]

The FindMy app on MacOS also appears to be receiving empty responses, so it's most likely an issue on Apple's side.

[lovelyelfpop]

Same problem dchristl/macless-haystack#219 and biemster/FindMy#88