I get the same problem in Sid, starting from the terminal gives some
more info:
** (nautilus:10024): WARNING **: 10:06:44.913: Error on getting
connection: Failed to load SPARQL backend:
GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient
disconnected from message bus without replying
(nautilus:10024): GLib-GIO-CRITICAL **: 10:06:45.905:
g_dbus_connection_signal_unsubscribe: assertion 'G_IS_DBUS_CONNECTION
(connection)' failed
(nautilus:10024): GLib-GObject-CRITICAL **: 10:06:45.905:
g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(nautilus:10024): GLib-GObject-CRITICAL **: 10:06:45.905:
g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(nautilus:10024): GLib-GObject-WARNING **: 10:06:45.905: invalid (NULL)
pointer instance
(nautilus:10024): GLib-GObject-CRITICAL **: 10:06:45.905:
g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(nautilus:10024): GLib-GObject-WARNING **: 10:06:45.992: invalid (NULL)
pointer instance
(nautilus:10024): GLib-GObject-CRITICAL **: 10:06:45.992:
g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE
(instance)' failed
Deleting ~/.cache/tracker/ does seem to fix it.
# systemctl --user status tracker-store
Failed to connect to bus: No such file or directory
Nautilus 3.30 seems very buggy overall - often crashing when opening a
new tab or window.
