I can't resurrect after dying during an event.

Hello! While completing the "The Light of Dawn" quest for the Death Knights, my character died in battle and, upon being instantly resurrected by the Valkyries, fell through the terrain and died while falling under it. Afterward, his spirit appeared in the graveyard near the "Light's Hope Chapel", but there was no Soul Healer there. I ran to the battlefield, and the resurrection button appeared, but it didn't work. I waited for the event to end, but I still couldn't resurrect.