Act not to be invalidated by informality, vacancy, etc.

No act done or proceeding taken under this Act by the Board shall be invalidated merely on the ground of,

1. (a) any vacancy or defect in the constitution of the Marketing Board;
2. (b) any defect or irregularity in the appointment of the person acting as a member thereof;
3. (c) any defect or irregularity in such act or proceedings, not affecting the substance.