Error when executing train_duration_model.sh script

[priyanthini]

I'm getting the following error when trying to train duration model. Can someone help me to solve this please?

**Traceback (most recent call last):
File "/home/abc/python-environments/merlin/src/run_merlin.py", line 1320, in
main_function(cfg)
File "/home/abc/python-environments/merlin/src/run_merlin.py", line 647, in main_function
min_max_normaliser.find_min_max_values(nn_label_file_list[0:cfg.train_file_number])
File "/home/abc/python-environments/merlin/src/frontend/min_max_norm.py", line 100, in find_min_max_values
temp_min = numpy.amin(features, axis = 0)
File "/home/abc/python-environments/pyvirtual/local/lib/python2.7/site-packages/numpy/core/fromnumeric.py", line 2618, in amin
initial=initial)
File "/home/abc/python-environments/pyvirtual/local/lib/python2.7/site-packages/numpy/core/fromnumeric.py", line 86, in _wrapreduction
return ufunc.reduce(obj, axis, dtype, out, passkwargs)
ValueError: zero-size array to reduction operation minimum which has no identity

Thank you.