stuck inside of boss fight room

[Balls of Salvation]

after killing the boss i stuck in the area cant go outside , cant use memory of grace , cant die dont have anything that consume my HP , i dont know what to do !!!!

[Rune of Cloud]

Did you just kill the boss of Leyndell? If so you have to sit at the site of grace that pops up and talk to melina. This does happen in a few other places, where you have to sit at the site of grace that spawns, but I can't remember where at exactly unfortunately. If you are not able to even sit at a site of grace or one did not spawn after defeating the boss, then I apologize, I don't know what to do at that point, but I wish you the best of luck in dealing with this.

[Toast]

What the post above me said. You also have to go check out the wall of thorns, that are up the stairs.