The essence of servitude quest requires the player to find "Ehrath'Ur's Horned Wreath". However, the enemy that used to drop the item is nowhere to be found. The name of the enemy is "Malura, the fated" and was supposed to spawn at the Catacombs, on the Moon. It seems that it was replaced by a Champion Knight, who doesn't drop the required item. This quest awards the Legendary Fusion Rifle "Dreambreaker", required for "Lunar Rover" badge , Shadowkeep seal and "Harbringer" title.