404. That’s an error.
The requested URL /add?source=atgs&feedurl=http%3A%2F%2Fwww.quebecnatureetdecouvertes.com%2Fobservation_de_la_nature%2Ftransversal%2Fsyndication.xml was not found on this server. That’s all we know.
/add?source=atgs&feedurl=http%3A%2F%2Fwww.quebecnatureetdecouvertes.com%2Fobservation_de_la_nature%2Ftransversal%2Fsyndication.xml