All officials, departments, and employees of the city of Cudahy vested with the authority or duty to issue permits, certificates, or licenses shall comply with the provisions of the zoning code and shall issue no permit, certificate, or license which conflicts with the provisions of this zoning code. Any permit, certificate, or license issued in conflict with the provisions of this zoning code shall be null and void. (Ord. 690 § 4 (Exh. A), 2018).