So my XPS 13's frame has been creaking on the left upper part (the part where the esc button is)

I noticed this when opening and closing the lid so i thought it was a problem with the hinge.

But when the laptop is closed and I apply pressure on the left upper side it starts to creak REALLY loudly.

The frame on the left side seems to be making this noise. The sound is like an old door creaking.

 
Applying opposite pressures on the left and right side of the laptop while it is closed produces the creaking noise on the left side exclusively.

Is this fixable by tightening the screws? Is it serious? Any knowledge as to why this is happening?