How do you get past Nocturnal's statue on the Pilgrim's Path?

Solution 1:

I have figured it out! You need to douse the torches in the room, as Nocturnal is the lady of shadows.

Solution 2:

According to my gameplay and this wiki:

There is two sconces near the statue in the third trial of this quest, on the right side of the right sonce you can see a chain, pull it. And to the sonce, in the left side of it, another chain, pull it too. This way the room will get dark and the path will open.