我正在尝试根据是否在网络摄像头源中检测到人脸来自动切换OBS场景。我正在使用OBS WebSocket API连接到OBS并在场景之间切换。但是，我遇到了一个问题，即使检测到人脸，场景也不会切换。程序运行没有任何错误，但是调试输出显示当前场景总是空字典{}。下面是我的代码示例：

import cv2
import time
import numpy as np
from obswebsocket import obsws, requests, events

# OBS WebSocket connection settings
host = "localhost"
port = 4455
password = "PLACEHOLDER"

# Scene names
live_scene = "LIVE"
afk_scene = "AFK"

# Global variable to store the current scene name
current_scene_name = ""

# Connect to OBS
ws = obsws(host, port, password)
print("Connecting to OBS WebSocket at {}:{}".format(host, port))
ws.connect()

try:
    version_info = ws.call(requests.GetVersion())
    print("Connected to OBS WebSocket version: {}.{}.{}".format(
        version_info.data().get("majorVersion", "Unknown"),
        version_info.data().get("minorVersion", "Unknown"),
        version_info.data().get("patchVersion", "Unknown")
    ))
    scenes = ws.call(requests.GetSceneList())
    print("Available scenes:", [scene["name"] for scene in scenes.data()["scenes"]])  # Added debug output
except Exception as e:
    print("Error connecting to OBS WebSocket:")
    print(type(e))
    print(e.args)
    print(e)

# Initialize webcam
cap = cv2.VideoCapture(0)

# Initialize face detection
face_cascade = cv2.CascadeClassifier(cv2.data.haarcascades + 'haarcascade_frontalface_default.xml')

while True:
    ret, frame = cap.read()

    if ret:
        gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

        faces = face_cascade.detectMultiScale(gray, 1.1, 4)

        if len(faces) > 0:
            print("Face detected")
            current_scene = ws.call(requests.GetCurrentScene())
            print("Current scene:", current_scene.data())  # Added debug output
            current_scene_name = current_scene.data().get("name", "Unknown")
            ws.call(requests.SetCurrentScene(scene_name=live_scene))
            print("Switching to scene:", live_scene)
        else:
            print("No face detected")
            current_scene = ws.call(requests.GetCurrentScene())
            print("Current scene:", current_scene.data())  # Added debug output
            current_scene_name = current_scene.data().get("name", "Unknown")
            ws.call(requests.SetCurrentScene(scene_name=afk_scene))
            print("Switching to scene:", afk_scene)

        time.sleep(1)

    else:
        print("Error reading frame from webcam")
        break

cap.release()
cv2.destroyAllWindows()

字符串
我从OBS WebSocket得到了这样的回复：
已连接OBS WebSocket版本：未知.未知.未知当前场景：{}切换到场景：LIVE
似乎GetCurrentScene（）函数没有返回正确的场景。有人能帮助我了解导致此问题的原因以及如何修复它吗？