I posted this on another post but it's old so I'd like to make a new one. Maybe they will see that many people are having issues with this quest. At least say you're working on a fix maybe?

The quest "The Big Dig" it's a misc quest. With out giving too many details, I'm on the part where you meet everyone at the Dig. Bobbi No-nose just stands there and repeats "Alright, we're all here." over and over. The quest is stuck at this point. I've tried everything you usually try to fix an error in a game. I would really like to finish this quest!

I was reading that a robot named Sonya is suppose to be here? It's not. So, I have no idea what to do.

It was glitchy for me. Took a bit to get it going. I think that you just have to stand in the correct position in relation to the others.

Find a weakness in the wall somewhere and "activate" it. Mel will then order the robot (Sonya?) to dig through. You'll have to keep doing this until you reach the end. At the last weakness, you can't just activate the wall. You'll need to talk to Mel first before you'll be able to progress. Mell will then tell you that you can continue to do the quest or first explore the parts of the area you haven't been yet. Sort of a point of no return, at least the area was glitched for me afterwards, making me unable to return. Guess I could give it another try since the game has been patched. Good luck!