drop_out problem

[madhu168]

Traceback (most recent call last):
dropout_prob: np.float32(0.5),
np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)
return array(a, dtype, copy=False, order=order)
ValueError: setting an array element with a sequence.

Can i know how to resolve the above error , the above error when we are running program in python3

If we are using python2 we are getting a version conflict of imageio stating that
imageio requires python >= 3.5 but the running python is 2.7