Pandora planet progress bug

So I achieved 100% in every zone on pandora. Got everything that needed to be done, however the planet progress is at 98% and says I’m missing a mission and location. But I have 100% in all zones on Pandora. Also it wont give me the achievement for finding all locations on Pandora because of this bug. Can any developers or people having the same issue help with this, please and thanks.

Have you been to the Slaughter Shaft?