VATICAN CITY – The Vatican on Wednesday urged a breakaway Catholic group dedicated to the old Latin mass to cancel plans to ordain new bishops without consent from Pope Leo, warning the action would incur excommunication from the 1.4-billion-member Church. In the first known threat of the Church’s most severe penalty during Leo’s papacy, the Vatican’s doctrinal office told the Swiss-based Society of St. Pius X any ordination of bishops would create a “schism”, or formal rupture with the pope. The planned ordination ceremony would mark “a grave offence against God and entail the excommunication established by the Church,” Cardinal Victor Fernandez, head of the office, said in a statement. The Vatican on Wednesday urged a breakaway Catholic group dedicated to the old Latin mass to cancel plans to ordain new bishops without consent from Pope Leo. AP A Swiss Guard stands as dark clouds hang over, during Pope Leo XIV’s weekly general audience in St.…