detector.findHands(img)的输出是一个元组。您应该给予它的第二个元素作为cv2.imshow()的输入：

from cvzone.HandTrackingModule import HandDetector
import cv2

cap = cv2.VideoCapture("https://192.168.178.49:8080/video")
detector = HandDetector(maxHands=1, detectionCon=0.7)

while True:
    success, img= cap.read()
    
    img = detector.findHands(img) 
    
    cv2.imshow("AI", img[1])
    cv2.waitKey(1)

mediapipe添加了一个新的变量，它增加了手部跟踪和姿势估计的调用复杂度和model_complexity。见下文。
现在我在做人脸检测，模块工作完美，但是当我把它拉到一个不同的时候它失败了。
用于手跟踪模块

def __init__(self, mode=False, maxHands=2, complexity = 1, detectionCon=0.5, trackCon=0.5):
    self.mode = mode
    self.maxHands = maxHands
    self.complexity = complexity
    self.detectionCon = detectionCon
    self.trackCon = trackCon
    self.mpHands = mp.solutions.hands
    self.hands = self.mpHands.Hands(self.mode, self.maxHands, self.complexity,
                                    self.detectionCon, self.trackCon, )

对于评估后模块：

def __init__(self, mode = False, model_complexity = 1, smooth = True,
                    enable_segmentation = False, smooth_segmentation = True, min_detection_confidence = 0.5,
                    min_tracking_confidence = 0.5):
    self.mode = mode
    self.model_complexity = model_complexity
    self.smooth = smooth
    self.enable_segmentation = enable_segmentation
    self.smooth_segmentation = smooth_segmentation
    self.detectionCon = min_detection_confidence
    self.trackCon = min_tracking_confidence
    self.mpDraw = mp.solutions.drawing_utils
    self.mpPose = mp.solutions.pose
    self.pose = self.mpPose.Pose(self.mode, self.model_complexity, self.smooth, self.enable_segmentation,
                                 self.detectionCon, self.trackCon)

只需进入源代码编辑器并

pip uninstall opencv-python

然后重新安装

pip install opencv-python

我也有同样的错误，这对我很有效