cv报错，cv2.inRange函数调用报错

问题相关代码，请勿粘贴截图

img_hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV) # 转化为 HSV 格式
thresh1 = np.array([190, 0.35, 0.3]) # 目标红旗的低阈值
thresh2 = np.array([245, 1, 1]) # 目标红旗的高阈值
img_1 = cv2.inRange(img_hsv, lowerb = thresh1, upperb = thresh2)
cv2.imshow('原始图像', img) # 显示图像
cv2.imshow('截取图像', img_1)
cv2.waitKey(0)
cv2.destroyAllWindows()

运行结果及报错内容

Traceback (most recent call last):
File "D:/Program Files/pythonProject233/6.py", line 12, in
img_1 = cv2.inRange(img_hsv, lowerb = thresh1, upperb = thresh2)
cv2.error: OpenCV(4.5.5) D:\a\opencv-python\opencv-python\opencv\modules\core\src\arithm.cpp:1782: error: (-215:Assertion failed) lb.type() == ub.type() in function 'cv::inRange'

hsv颜色阈值应该是H：0-180，S：0-255，V：0-255吧

是不是图片没加载进去，img