No act done or proceedings taken under this Act by 1[the Authority] or a committee appointed by 2[the Authority] shall be invalidated merely on the ground of- (a) any vacancy of a Member or any defect in the constitution or reconstitution of 3[the Authority] or a committee thereof; or (b) any defect or irregularity in the appointment of a person as a Member of 4the Authority] or of a committee thereof; or (c) any defect or irregularity in such act or proceedings, not affecting the substance.
<span style="margin-left:15px;"></span>No act done or proceedings taken under this Act by <sup>1</sup>[the Authority] or a committee appointed by <sup>2</sup>[the Authority] shall be invalidated merely on the ground of-<br> <span style="margin-left:15px;"></span><span style="margin-left:15px;"></span>(<i>a</i>) any vacancy of a Member or any defect in the constitution or reconstitution of <sup>3</sup>[the Authority] or a committee thereof; or<br> <span style="margin-left:15px;"></span><span style="margin-left:15px;"></span><i>(b)</i> any defect or irregularity in the appointment of a person as a Member of <sup>4</sup>the Authority] or of a committee thereof; or <br> <span style="margin-left:15px;"></span><span style="margin-left:15px;"></span>(<i>c</i>) any defect or irregularity in such act or proceedings, not affecting the substance.<br>