How to do this quest?

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? I was doing purple quest LV45 and after something i accepted I was teleported to the beggining of the game where u pick ur class, i talked to Athena and she took me back here, and well... the image explains...

i think this quest is when you got your Constellation.

I said that already xd, but quest is still 0/1 don't know what to do..

I think you need pick up something in the place.