Section 9. Vacancies, etc., not to invalidate proceedings of Commission

9. Vacancies, etc., not to invalidate proceedings of Commission.— No act or proceeding of the — Commission shall be invalid merely by reason of (a) any vacancy in, or any defect in the constitution of, the Commission; or (b) any defect in the appointment of a person as the Chairperson or a Member; or (c) any irregularity in the procedure of the Commission not affecting the merits of the case.