MAJOR ISSUE - Stuck in dungeon, 2 mobs won't die and can't progress

We progressed to a point in the dungeon where there were 2 mobs that wouldn't "come to life" (you could attack them, but they wouldn't move or attack back), and they wouldn't die. The door to the next section wouldn't open. Included are 3 screenshots with coordinates showing. The 2 mobs that wouldn't die, and what I think was the door to the next area. I did look for mobs that we missed earlier (not sure if that's a requirement for these mobs to "come to life"), didn't find any even after looking for 5+ mins, though I can't say for sure there wasn't a mob I missed ALSO see comments