see i want that my agent will hangup call so to hangup call this function is not working async def hangup_call(self) -> Dict[str, Any]: """Properly hang up the call by deleting the LiveKit room""" if not self.session_manager: return {"success": False, "message": "Session unavailable"} booking = self.session.userdata.booking room_name = self.session_manager.room.name logger.info( f"📞 Initiating room deletion hangup for booking {booking.booking_id} " f"(room: {room_name})" ) try: # ✅ POSITIONAL ARGUMENT (required by your SDK) await self.session_manager.ctx.api.room.delete_room(room_name) logger.info(f"✅ Room {room_name} deleted - call ended") if booking.booking_id: await db_manager.mark_call_ended( booking.booking_id, "NORMAL_COMPLETION" ) await self.session.aclose() return {"success": True, "message": "Call ended"} except Exception as e: logger.error(f"❌ Failed to delete room {room_name}: {e}") # Fallback: still close agent session try: await self.session.aclose() except Exception: pass return {"success": False, "error": str(e)} it can't hangup

Have you looked at the docs? https://docs.livekit.io/frontends/telephony/agents/#hangup