Bug at lvl 45 scholar quest "In the image of the ancients"

Date & Time: 24.01.2019
Frequency: once
World name: Moogle
Character name: Shinyae Riege
NPC name: Alka Zolka
Class/Level: Scholar

Bug at lvl 45 scholar quest "In the image of the ancients".
While doing that quest my inv. was full i think so i ddnt gat one part of equipment - Scholar Pants. And now i can't complete the quest without them. That eq is also not available at calamity salvager npc. Abandon option is not available at that quest. Is there any other option to get that pants back ?

Talk to the NPC you got them from again.

Checked. nope it is not working.