[TBC] warlock class quest[Devourer of souls]cant get

[valentiner]

I can not get the warlock class quest[Devourer of souls],quest ID:1716,I have seen all the warlock trainers, but can not get this quest.
But other players can normally complete this task, I do not know why this happens.
Is there anyone can give me a solution?
I have already submitted a ticket in the game, but I have not received any reply.

[Peregrine]

Ironforge-

[valentiner]

I've tried it, it's no use.

[staga3k]

The pre-q is in ironforge, Gakins summons