(7) On a vacancy occurring in the committee the liquidator shall summon a meeting of creditors or of contributories, as the case may require, to fill the vacancy, and the meeting may, by resolution, re-appoint the same or appoint another creditor or contributory to fill the vacancy; but if the liquidator, having regard to the position in the winding-up, is of the opinion that it is unnecessary for the vacancy to be filled he or she may apply to the court and the court may make an order that the vacancy shall not be filled, or shall not be filled except in such circumstances as may be specified in the order.