I'm so sorry! It does appear that it was a prolapsed vent, when the intestines are outside the body then the chick is very unlikely to survive. I would check your humidity level in the incubator, make sure it's as optimum as can be. Temperature and humidity can cause issues with hatch when they aren't what they should be. Sometimes a new chick will have unabsorbed yolk sac, which will sometimes absorb if left in the incubator long enough after hatch, but it does not appear that yours was yolk sac, it looks like tissue. The tissue in new chicks vents are really fragile, even pasty butt clean up, if done roughly, can cause this to happen. If a bit of shell is stuck it's best to place it in a wet paper towel in a small dish or cup, in the incubator and let the moisture loosen it if possible. Same thing if you have an unabsorbed yolk sac. So sorry, things don't always go perfectly, it's always hard to lose the tiny ones.