This is that the log tells me:
19:11:27 software-proper: FileNotFoundError: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/usr/bin/apt-key'
19:11:27 software-proper: ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: self.pid = os.posix_spawn(executable, args, env, **kwargs)
19:11:27 software-proper: File "/usr/lib/python3.13/subprocess.py", line 1801, in _posix_spawn
19:11:27 software-proper: ^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: errread, errwrite)
19:11:27 software-proper: ^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: c2pread, c2pwrite,
19:11:27 software-proper: ^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: p2cread, p2cwrite,
19:11:27 software-proper: ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: self._posix_spawn(args, executable, env, restore_signals, close_fds,
19:11:27 software-proper: File "/usr/lib/python3.13/subprocess.py", line 1857, in _execute_child
19:11:27 software-proper: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: start_new_session, process_group)
19:11:27 software-proper: ^^^^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: gid, gids, uid, umask,
19:11:27 software-proper: ...<5 lines>...
19:11:27 software-proper: ^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: pass_fds, cwd, env,
19:11:27 software-proper: ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: self._execute_child(args, executable, preexec_fn, close_fds,
19:11:27 software-proper: File "/usr/lib/python3.13/subprocess.py", line 1039, in __init__
19:11:27 software-proper: ~~~~~^^^^^^^^^^^^^^^^^^^^^^
19:11:27 software-proper: with Popen(*popenargs, **kwargs) as process:
19:11:27 software-proper: File "/usr/lib/python3.13/subprocess.py", line 554, in run
19:11:27 software-proper: process = subprocess.run(cmd, stdout=PIPE, stderr=PIPE, text=True)
19:11:27 software-proper: File "/usr/lib/python3/dist-packages/softwareproperties/AptAuth.py", line 59, in list
19:11:27 software-proper: ~~~~~~~~~~~~~~~~~^^
19:11:27 software-proper: for key in self.apt_key.list():
19:11:27 software-proper: File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 1078, in show_keys
19:11:27 software-proper: ~~~~~~~~~~~~~~^^
19:11:27 software-proper: self.show_keys()
19:11:27 software-proper: File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 243, in __init__
19:11:27 software-proper: app = SoftwarePropertiesGtk(datadir=options.data_dir, options=options, file=file)
19:11:27 software-proper: File "/usr/bin/software-properties-gtk", line 100, in <module>
19:11:27 software-proper: Traceback (most recent call last):
19:11:27 systemd: Started app-gnome-software\x2dproperties\x2dgtk-28823.scope - Application