Stuck with Uncompletable Contract Quest

Reference 2,209,160,977

The quest "Contract: The Slaver King" is stuck in my quest log, and I'm unable to complete it as I don't have the quest contract item to give to Adiyah to open the contract. It isn't in my inventory, crafting bench, or any hideout NPCs.
Because I have the quest, I presume it's impossible for the quest item to drop again in the future as well.

"

TOPDjo wrote:

I don't have the quest contract item to give to Adiyah to open the contract.

"The Slaver King" is not a green-named Quest item, it is a gold-named Unique item. Check your stash tab with affinity for uniques, and your heist locker. I don't recall which has priority for unique contracts.

Thank you very much, you're absolutely right.
A bit confusing the quest log makes it look like a regular green story quest, but I found the unique contract hiding in my heist locker.