Academic Interest Bugged

Hi,

I was exploring the area I currently have all of the npc party members I could have. I did all the red crystals and then decided to do all the remaining puzzles in the area before going and fighting whatever demon that was speaking to me. And now there's a blue barrier up but Neve nor any of my other characters can unlock it. I've looked at others gameplay and there's supposed to be a spot above the door to unlock it. And it's missing. Any advice?