Cannot run Mopidy as normal user: "Algorithm plain is not supported."

Hi, I’m unable to start mopidy outside root, which is odd, since I used to be able to run it normally. “sudo mopidy” works fine, but when I try running it as my normal user, it returns this:

awesome% mopidy -v
Traceback (most recent call last):
  File "/usr/bin/mopidy", line 33, in <module>
    sys.exit(load_entry_point('Mopidy==3.3.0', 'console_scripts', 'mopidy')())
  File "/usr/lib/python3.10/site-packages/mopidy/__main__.py", line 55, in main
    config, config_errors = config_lib.load(
  File "/usr/lib/python3.10/site-packages/mopidy/config/__init__.py", line 111, in load
    raw_config = _load(files, defaults, keyring.fetch() + (overrides or []))
  File "/usr/lib/python3.10/site-packages/mopidy/config/keyring.py", line 44, in fetch
    session = service.OpenSession("plain", EMPTY_STRING)[1]
  File "/usr/lib/python3.10/site-packages/dbus/proxies.py", line 72, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python3.10/site-packages/dbus/proxies.py", line 141, in __call__
    return self._connection.call_blocking(self._named_service,
  File "/usr/lib/python3.10/site-packages/dbus/connection.py", line 652, in call_blocking
    reply_message = self.send_message_with_reply_and_block(
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.InvalidArgs: Algorithm plain is not supported. (only dh-ietf1024-sha256-aes128-cbc-pkcs7 is supported)

Running other commands like mopidy config and mopidy deps return the same result. There are also no currently running mopidy services. Some commands, like mopidy --version and mopidy -h, function normally.
Running on Arch Linux x86_64 kernel 5.15.68-1 lts, zsh, and Mopidy 3.3.0.

Oh, I’m also using the default configuration file provided here:
https://docs.mopidy.com/en/latest/config/