Where a governmental entity received the benefit of a service for which the contract is later declared void ab initio, the entity cannot be held liable for the debt owed under the express contract or a contract implied in fact, but may still be liable under the equitable theory of a contract implied by law.The 1st District Appellate Court reversed and remanded a decision from Cook County Associate Judge Brigid Mary McGrath.On May 10, 2014, a fire broke out at Proviso East High School in west suburban Maywood. The fire …