Find Esbern in the Ratway Warrens but he’s at Sky Haven Temple

During the quest “A Cornered Rat“, I am supposed to find Esbern in the Ratway Warrens, but the quest marker shows him in Sky Haven Temple. I have gone back a few saves, but the problem still persists. I have exited my game and gone back in and it still occurs. I’m not sure what exactly I’m supposed to do here. Any advice?