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

No act or proceeding of the Commission shall be questioned or shall be invalid on the ground merely of the existence of any vacancy in, or defect in the constitution of, the Commission or any defect in the nomination of a person acting as the Chairperson or a member or any irregularity in the procedure of the Commission, including in issuing of notice for holding of a meeting, not affecting merits of the matter.