Under the Crooked Tree Live This Year?

Drink from the hag's cauldron to accept her curse. Then you will be able to defeat her sister's restless spirit.

Drink from the cauldron and release Aria Sorrowheart's spirit
Relevant Locations
The entirety of this quest happens in Val'sharah.

Please Help !
Thanks !

I didn't find the right solution from the internet.

References:
-https://us.battle.net/forums/en/wow/topic/20759327866
-Medical Device Marketing