Training part was done successfully but am facing some issue in detect part.

[AnkitSnh2]

File "/Users/Apple/Downloads/Self-driving-Car-master/ViolaJonesFaceDetection/Viola-Jones-master/boostedcascade/boostedcascade.py", line 539, in loadModel
Ftarget, f, d, validset_rate, CIsteps, detectWndH, detectWndW, features_cnt = np.load(filename+'-variables.npy')
ValueError: need more than 3 values to unpack

My -variables.npy looks like this:
cat Model/-variables.npy
?NUMPYv{'descr': '<i8', 'fortran_order': False, 'shape': (3,), }
??