UnicodeEncodeError: 'ascii' codec can't encode character '\xfc'

[KaiMartin]

Description

Since a few days, mirage complains about UnicodeEncoding when I type a message -- not always, but when it does, I get an error message for every key I press. However, if I click "ignore" all characters I had typed are correctly shown. Sending and reading messages seems to be perfectly fine.

Error message

UnicodeEncodeError: 'ascii' codec can't encode character '\xfc' in position 243: ordinal not in range(128)
Traceback (most recent call last):
File "qrc:/src/backend/user_files.py", line 182, in _start_writer
await new.write(self.serialized())
File "/usr/lib/python3/dist-packages/aiofiles/threadpool/utils.py", line 36, in method
return (yield from self._loop.run_in_executor(self._executor, cb))
File "/usr/lib/python3.9/concurrent/futures/thread.py", line 52, in run
result = self.fn(*self.args, **self.kwargs)
UnicodeEncodeError: 'ascii' codec can't encode character '\xfc' in position 243: ordinal not in range(128)

Your environment

• Debian bookworm/testing
• x86 64bit)
• desktop environment: XFCE
• installed from the debian repo
• my locale is :
  $ locale
  LANG=en_GB.UTF-8
  LANGUAGE=en_GB:en
  LC_CTYPE="en_GB.UTF-8"
  LC_NUMERIC="en_GB.UTF-8"
  LC_TIME="en_GB.UTF-8"
  LC_COLLATE="en_GB.UTF-8"
  LC_MONETARY="en_GB.UTF-8"
  LC_MESSAGES="en_GB.UTF-8"
  LC_PAPER=de_DE.UTF-8
  LC_NAME="en_GB.UTF-8"
  LC_ADDRESS="en_GB.UTF-8"
  LC_TELEPHONE="en_GB.UTF-8"
  LC_MEASUREMENT="en_GB.UTF-8"
  LC_IDENTIFICATION="en_GB.UTF-8"
  LC_ALL=

Steps to reproduce

Type a message

Expected behavior

No complaints

Actual behavior

An error message for every key press.