Bug Finish Quest SM (Chest)

Nick of my character : Huesiitos

Hello good afternoon, I come to comment on what happened to me, We finished the mission of agony my friend and I on the same raid, he completed the mission of the last fight of the lifeless king just like me, and when I had to grab the chest I he grabbed, question that the complete mission to deliver the chest and give you the objects, and I said well I will wait another week and kill lk to get the chest and nothing, I think this bug, and does not throw me the chest but I can see all the bosses at the entrance and uther I only need the mission of the chest, and I do not have the item either in the backpack I checked and nothing I need a help to finish the last mission that is to take the chest to deliver them to the npcs that are at the door, here I leave my raid screen, when I delivered the mission and gave me nothing more. https://imgur.com/a/R9A6Y7o