Error when I launch the dialog and click "Google" , what can I do to fix this?

$ online-accounts-preferences 

(unity-control-center:1992): credentials-cc-panel-CRITICAL **: file src/cc-credentials-accounts-model.c: line 344: unexpected error: Error calling StartServiceByName for com.canonical.indicators.webcredentials: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildSignaled: Process /usr/bin/signon-ui received signal 6 (g-dbus-error-quark, 26)

(unity-control-center:1992): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(unity-control-center:1992): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(unity-control-center:1992): credentials-cc-panel-CRITICAL **: cc_credentials_account_details_page_construct: assertion 'accounts_store != NULL' failed

(unity-control-center:1992): GLib-GObject-CRITICAL **: g_object_ref_sink: assertion 'G_IS_OBJECT (object)' failed

(unity-control-center:1992): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(unity-control-center:1992): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(unity-control-center:1992): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(unity-control-center:1992): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(unity-control-center:1992): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(unity-control-center:1992): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(unity-control-center:1992): Gtk-CRITICAL **: gtk_notebook_append_page: assertion 'GTK_IS_WIDGET (child)' failed

(unity-control-center:1992): Gtk-CRITICAL **: gtk_tree_model_iter_n_children: assertion 'GTK_IS_TREE_MODEL (tree_model)' failed

(unity-control-center:1992): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(unity-control-center:1992): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(unity-control-center:1992): credentials-cc-panel-CRITICAL **: file src/cc-credentials-authorization-page.c: line 388: unexpected error: Error calling StartServiceByName for com.canonical.indicators.webcredentials: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildSignaled: Process /usr/bin/signon-ui received signal 6 (g-dbus-error-quark, 26)

(unity-control-center:1992): account-plugin-CRITICAL **: Couldn't store identity: GDBus.Error:com.google.code.AccountsSSO.SingleSignOn.Error.InternalServer: Server internal error occurred.Could not access Signon Database.

(unity-control-center:1992): credentials-cc-panel-CRITICAL **: cc-credentials-authorization-page.vala:182: Error completing auth session process: GDBus.Error:com.google.code.AccountsSSO.SingleSignOn.Error.InternalServer: Server internal error occurred.Could not access Signon Database.

(unity-control-center:1992): account-plugin-CRITICAL **: Couldn't store identity: GDBus.Error:com.google.code.AccountsSSO.SingleSignOn.Error.InternalServer: Server internal error occurred.Could not access Signon Database.

(unity-control-center:1992): credentials-cc-panel-CRITICAL **: cc-credentials-authorization-page.vala:182: Error completing auth session process: GDBus.Error:com.google.code.AccountsSSO.SingleSignOn.Error.InternalServer: Server internal error occurred.Could not access Signon Database.