Contract Modification Due to Crisis. Covid 19. Rebus sic Stantibus. Commercial Law. IN DIEM Lawyers. Specialist lawyers in Contracting and Business IN DIEM. Seville, Málaga, Madrid, Las Palmas de Gran Canaria, Almería, Huelva, Tomares, Estepona, Mairena del Aljarafe, Mairena del Alcor, Dos Hermanas, Coria del Río. Marbella. Phone.