calendar-app

Fail to connect with client Unable to connect to 'Tasks': Cannot open calendar: Data source 'Tasks' does not support OAuth 2.0 authentication

(qmlscene:11132): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(qmlscene:11132): libecal-CRITICAL **: e_cal_client_get_view: assertion 'E_IS_CAL_CLIENT (client)' failed