Can't progress the quest "Tango with a Tracker" because of game crash.

[jekasama]

Platform: PC Windows 10
Date & Time: January 1st, 2025
Frequency: Once, not reproduced.
Character Name: Zahir
Race: Hume
World: Asura
Main Job: MNK
Support Job: WAR
Area and Coordinates: Boneyard Gully, ?-? (the Dark Miasma interactable)
Party or Solo: Solo with trusts
NPC Name: Quest giver: Despachiaire
Monster Name: Shikaree X, Shikaree Y, and Shikaree X's Rabbit.
Steps:
1. Started the quest normally.
2. Reached the fight area.
3. Started the fight normally.
4. Game crashed when the boss started a conversation (the boss hasn't aggro'd yet).
5. Restarted the game.
6. My character's now outside the fight arena, as if the fight had ended.
7. No reward(s) from the quest.
8. Quest tracker still on "Tango with a Tracker".
9. Tried to talk to the quest giver, Despachiaire again. He's now stuck in a normal NPC conversation.
10. The key item that as I understood needed to engage the boss fight (Letter from Shikaree X) is now gone from Temporary Key Items.
11. The interactable (Dark Miasma) in Boneyard Gully is now stuck in normal prompt, preventing me from entering the fight.

Posted here as suggested by GM Jobajokila that reached me in game to help: