I am getting another error

[noorulain3]

ValueError Traceback (most recent call last)
in
55 return n
56
---> 57 boundingBox = findBB(binary)
58 cropImg = binary[boundingBox[0]:boundingBox[1], boundingBox[2]:boundingBox[3]]
59 centroid = findCentroid(cropImg)

in findBB(im)
13 for x in range(h):
14 for y in range(w):
---> 15 if (im[x,y] == 0):
16 right = x if x > right else right
17 left = x if x < left else left

ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

I have tried a lot but still not able to solve this error. Please help