If you are having a slow startup and facing a Nautilus Issue like this

[user1@node1 ~]$ nautilus

** (nautilus:3369252): WARNING **: 14:40:58.988: Error on getting connection: Failed to load SPARQL backend: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disco                      nnected from message bus without replying

(nautilus:3369252): GLib-GIO-CRITICAL **: 14:52:11.952: g_dbus_connection_signal_unsubscribe: assertion 'G_IS_DBUS_CONNECTION (connection)' failed

(nautilus:3369252): GLib-GObject-CRITICAL **: 14:52:11.952: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(nautilus:3369252): GLib-GObject-CRITICAL **: 14:52:11.952: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(nautilus:3369252): GLib-GObject-WARNING **: 14:52:11.952: invalid (NULL) pointer instance

(nautilus:3369252): GLib-GObject-CRITICAL **: 14:52:11.952: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
Error creating proxy: Error calling StartServiceByName for org.gtk.vfs.GoaVolumeMonitor: Timeout was reached (g-io-error-quark, 24)

The solution is by clearing the .cache/tracker

$ rm -rf .cache/tracker/

Log Off and Log On again. You should be able to run nautilus without issues