Aillic's Stranger BUG?

Hello,

I continue to progress by doing all the missions on the maps.

The name of the map I was on was Sarlo, and I talked to NPC Nate Manrold and took part. Name of the mission (Aillic's Stranger)

He wants 3 pieces from me for the mission.

I know these pieces must fall from the creatures? But even though I killed all the creatures on the map, these items aren't coming?

Quote from Abidabi

Hi,

look at this website for answer: Ailic's Stranger

Hello, Yes, I know that, but the items he said do not fall from the creatures he said.