Checkpoint Not Working

During the quest, LEGACY OF THE VAAL, the checkpoint outside of the arena for Ketzuli, High Priest of the Sun, will not work. I died during the fight, and it put me at the start of the dungeon. When I try to teleport to said checkpoint, it phases my character out for a split second before putting me right back where I was. I can teleport to another checkpoint within the same dungeon, just not the one for the boss.