Pila Fe bugged

I was making my scrolls yesterday afternoon and suddenly the boss just did not die; I thought that with a restart it would be solved and the quest would simply self-undo but it is still there and I can no longer summon my scrolls.
How to solve this in game?

Forfeit the black spirit quest to kill the pila fe monsters. Then you can use the summon scrolls again.
I have noticed sometimes the first monster doesn’t visually die but still registers as dead on the quest. Other times it gets stuck there even if you log in and out or move away and come back. Usually for me, it is just a visual bug.
But if the next monster doesn’t spawn, then it is a problem.

Looks like your connection to OgreFest | Black Desert Online Private Server was lost, please wait while we try to reconnect.