I am Manine, gatewarden here at Came Black Brush...
This sounded wrong, but I thought it's a typo. She then told me to get materials from Quartermaster Mimina. I looked around and couldn't find Mimina; until I checked the wiki, which said Mimina is Quartermaster of Camp Black Brush, in a faraway land.
It would make no sense that a local leve quest for lv. 1 Armorer would send me so far. So I guess it's a bug :(