handle non-critical race condition

system/ui/lib/wifi_manager.py

@@ -255,10 +255,14 @@ class WifiManager:
 
   def _connection_by_ssid(self, ssid: str, known_connections: list[dbus.ObjectPath] | None = None) -> dbus.ObjectPath | None:
     for conn_path in known_connections or self._get_connections():
+      try:
         conn_props = dbus.Interface(self._main_bus.get_object(NM, conn_path), NM_CONNECTION_IFACE)
         settings = conn_props.GetSettings()
         if "802-11-wireless" in settings and bytes(settings["802-11-wireless"]["ssid"]).decode("utf-8", "replace") == ssid:
           return conn_path
+      except dbus.exceptions.DBusException:
+        # ignore connections removed during iteration (need auth, etc.)
+        cloudlog.exception(f"Failed to get connection properties for {conn_path}")
     return None
 
   def connect_to_network(self, ssid: str, password: str):