WotLK Paladin - Claiming the light bug

[AuraAco]

Hi,

On the Claming the light lvl 12 quest, I got a bug when I used the empty shimmering vessels into one of the magisters. The item disappeared and I didn't get the filled vessel. I think I moved the character while it was channeling and then I didn't get the empty vessel back.
Is there a way to get again the empty shimmering vessel? I'd like to finish the quest in order to get the Redemption Skill

Thanks!

[AuraAco]

Is there any way to restart the quest?
How can I get that spell otherwise?

[OhieMitzen]

If you got an item from an NPC, you can probably request back the same item from the same NPC. One option is to abandon quest and retake it.