Error : UnpicklingError: invalid load key, '<'

I am getting the below error while loading files using cmd :
np.load(’/content/sample_submission_2.npz.1’, allow_pickle=True, mmap_mode=‘r’)[‘data’]

Have tried a few trouble shooting fixes, didn’t helped. Can any one suggest?

UnpicklingError Traceback (most recent call last)

/usr/local/lib/python3.7/dist-packages/numpy/lib/npyio.py in load(file, mmap_mode, allow_pickle, fix_imports, encoding)
446 try:
–> 447 return pickle.load(fid, **pickle_kwargs)
448 except Exception:

UnpicklingError: invalid load key, ‘<’.

During handling of the above exception, another exception occurred:

OSError Traceback (most recent call last)

1 frames

/usr/local/lib/python3.7/dist-packages/numpy/lib/npyio.py in load(file, mmap_mode, allow_pickle, fix_imports, encoding)
448 except Exception:
449 raise IOError(
–> 450 “Failed to interpret file %s as a pickle” % repr(file))
451
452

OSError: Failed to interpret file ‘/content/sample_submission_12.npz’ as a pickle