I managed to run conda env update without errors after following @ashtonsix post
At first I just removed fastai repository, cloned it and the same error reappeared.
Then I ran
conda env remove -y -n fastai
before
conda env update
After running these two commands, there were no errors (haven’t modified environment.yml file as there have been already changes pushed to fastai repository).
Now the only warnings are the following:
twisted 18.7.0 requires PyHamcrest>=1.9.0, which is not installed.
mkl-random 1.0.1 requires cython, which is not installed.
spacy 2.0.12 has requirement regex==2017.4.5, but you’ll have regex 2018.7.11 which is incompatible.
Afterwards, I have installed mkl-random and twisted with pip:
pip install twisted
pip install mkl-random
Finally I have successfully opened and ran jupyter notebooks