Why is this side-quest rearding Orolunga misleading?

In Tomb of Annihilation, one of the side-quests in Port Nyanzaru has an acolyte stumble up to the characters and say

Speak to the wise guardian of Orolunga, east of Mbala. She can direct you to that which you seek.

But Orolunga is west of Mbala, not east. Is this an accidental mistake? Or is it incorrect on purpose?