404. That’s an error.
The requested URL /add?source=atgs&feedurl=http%3A%2F%2Fechappes.de.melusine.free.fr%2Fartiphp%2F%2Ftransversal%2Fsyndication.xml was not found on this server. That’s all we know.
/add?source=atgs&feedurl=http%3A%2F%2Fechappes.de.melusine.free.fr%2Fartiphp%2F%2Ftransversal%2Fsyndication.xml