Also, no Msgr. Guido Marini. I wonder if he has finally reached his limit.
It doesn’t invalidate, but it is exceptionally grave. And telling. From the Catholic Encyclopedia entry on altar candles:
The pure wax extracted by bees from flowers symbolizes the pure flesh of Christ received from His Virgin Mother, the wick signifies the soul of Christ, and the flame represents His divinity.
Without an Apostolic indult it is not allowable, and it constitutes a grievous offense to celebrate Mass without any light (Cong. Sac. Rit., 7 September, 1850), even for the purpose of giving Holy Viaticum, or of enabling the people to comply with their duty of assisting at Mass on Sundays and holy days (St. Lig., bk. VI, n. 394). In these, and similar cases of necessity it is the common opinion that Mass may be celebrated with tallow candles or oil lamps (ibid.). It is not permitted to begin Mass before the candles are lighted, nor are they to be extinguished until the end of Mass. If the candles go out before the Consecration, and cannot be again lighted, most authors say that Mass should be discontinued; if this happens after the Consecration, Mass should not be interrupted, although some authors say that if they can possibly be lighted again within fifteen minutes the celebrant ought to interrupt Mass for this space of time (ibid.) If only one rubrical candle can be had, Mass may be celebrated even ex devotione (ibid).