Error: numpy.core._multiarray_umath

Hello,

As per instruction - I installed the requirements.txt file, upgraded my tensorflow to 1.13 but I’m getting this error

Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 968, in _find_and_load
SystemError: <class '_frozen_importlib._ModuleLockManager'> returned a result with an error set
ImportError: numpy.core._multiarray_umath failed to import
ImportError: numpy.core.umath failed to import
2019-03-05 02:29:12.004806: F tensorflow/python/lib/core/bfloat16.cc:675] Check failed: PyBfloat16_Type.tp_base != nullptr 

I checked online for similar issue and saw that it can be resolved by python -m pip install --upgrade numpy but when I did that, I got a different error which looks like current numpy bug.

from ._conv import register_converters as _register_converters
Traceback (most recent call last):
  File "/Users/sens3i/anaconda3/bin/ludwig", line 6, in <module>
    from ludwig.cli import main
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/ludwig/__init__.py", line 16, in <module>
    from ludwig.api import LudwigModel
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/ludwig/api.py", line 39, in <module>
    from ludwig.data.postprocessing import postprocess_df, postprocess
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/ludwig/data/postprocessing.py", line 19, in <module>
    from ludwig.features.feature_registries import output_type_registry
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/ludwig/features/feature_registries.py", line 33, in <module>
    from ludwig.features.image_feature import ImageBaseFeature
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/ludwig/features/image_feature.py", line 24, in <module>
    from skimage.io import imread
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/skimage/__init__.py", line 158, in <module>
    from .util.dtype import *
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/skimage/util/__init__.py", line 7, in <module>
    from .arraycrop import crop
  File "/Users/sens3i/anaconda3/lib/python3.6/site-packages/skimage/util/arraycrop.py", line 8, in <module>
    from numpy.lib.arraypad import _validate_lengths
ImportError: cannot import name '_validate_lengths'

Please see https://github.com/scikit-image/scikit-image/issues/3551 - A member on the thread said to install scikit-image 0.14.2 which seem to resolve the issue.

I realized that my default scikit-image was 0.13.1, so I pip install scikit-image==0.14.2

Incase someone else run into this error, I hope this helps. Also, maybe the exact version of scikit-image used for ludwig should be added to the requirements.txt file. Thanks

[Barath19]

python -m pip install --upgrade numpy and pip install scikit-image==0.14.2 solved the issue

[elkalash]

Solved !!!