abandoned prison

Hello, I broke the quest. In the quest, an abandoned prison, I died when the boss (you need to kill him with a ballista) cast an attack that killed me, but my mobs killed him. As a result, the boss was killed, and I was thrown to a checkpoint. As a result, the boss's kill was not counted and the items from it disappeared. If you need to go through it again to complete it, I will simply drop the game until the next update.

The problem is solved. It turns out that you had to run the level with a new one and the boss respawn. It's good that they thought of this moment.