Temple of Legends quest bugged what to do?

Like I said in the title, the quest got bugged, when I am supposed to be killing the boss, right before that, I need to jump down into a hole where the arena is, land in a puddle of whatever and then see a cutscene, however I never got the cutscene, and I am just stuck in the puddle, I tried respawning, switching servers, relogging everything and the quest just isn't working, what do I now?