TypeError: No loop matching the specified signature and casting was found for ufunc add

Intro to Machine Learning (2018)
1

I am not able to fit my model with

ImageClassifierData.from_arrays

object , following is the error i get

TypeError                                 Traceback (most recent call last)
<ipython-input-51-82c597912cf3> in <module>()
----> 1 fit(net, model_data ,n_epochs=1, crit=loss , opt=opt , metrics=metrics)

3 frames
/usr/local/lib/python3.6/dist-packages/numpy/core/_methods.py in _sum(a, axis, dtype, out, keepdims, initial)
     34 def _sum(a, axis=None, dtype=None, out=None, keepdims=False,
     35          initial=_NoValue):
---> 36     return umr_sum(a, axis, dtype, out, keepdims, initial)
     37 
     38 def _prod(a, axis=None, dtype=None, out=None, keepdims=False,

TypeError: No loop matching the specified signature and casting
was found for ufunc add

can anyone help or give an alternative