Tourney How do you rule this (2 Viewers)

[52off]

Holdem game. Everything going smooth, Flop, Checks, Turn, Checks, about to burn and flop the River when it's noticed there was no burn card before the Turn.

What do you do?

Thanks in advance

 

[CraigT78]

Nothing. Significant action has occured. Burn and put out the river and proceed.