Why was Jan Hus burned

As a reformer of the Roman Catholic Church, Jan Hus was a great critic of it. He especially criticized the moral decline of the church and preached his teachings to the general public. His role model was the English philosopher and theologian John Wycliffe. In 1411, Jan Hus was expelled from the church, and on July 6, 1415, he was declared a heretic at the Council of Constance and burned at the stake because he refused to revoke his teachings.