 At this juncture, Pope John XXIII left Constance (20 March 1415) and withdrew from the council, while the King of France and the Duke of Burgundy made peace by the Treaty of Arras (22 February 1415).Thereupon Charles VI ordered his representatives to take no action at the council against Jean Petit, provided the Duke of Burgundy would also let the matter rest.Gerson broke the agreement by trying to obtain from the council a declaration that the writings of Jean Petit contained numerous errors in matters of faith.