There was an error during operation

[sxr2003]

Traceback (most recent call last):
File "/home/pi/Desktop/main/face.py", line 61, in
main()
File "/home/pi/Desktop/main/face.py", line 36, in main
faces = detector(img, 1)
TypeError: call(): incompatible function arguments. The following argument types are supported:
1. (self: _dlib_pybind11.fhog_object_detector, image: array, upsample_num_times: int=0) -> _dlib_pybind11.rectangles

Invoked with: <_dlib_pybind11.fhog_object_detector object at 0x7f9095eef0>, None, 1