Francis has asserted that most sacramental marriages are "invalid." See here.
The Church, unlike Francis who seems to be having a mental breakdown, accepts every marriage as valid until proven otherwise.
This is a matter of Canon Law. The Code of Canon Law, which Francis should familiarize himself with, States CLEARLY:
"Marriage possesses the favor of law; therefore, in a case of doubt, the validity of a marriage must be upheld until the contrary is proven." (c. 1060).
Francis, who has admitted to suffering from mental illness, would appear to suffer as well from delusions of grandeur, believing himself wiser than the mind of the Church while dispensing with Church Law.
Immaculate Heart of Mary, shield the faithful from this nonsense. Saint Michael, defend the Church.