Hi I am having similar problem with incompatible versions of scikit-learn & classifiers.
we are running a QIIME2 analysis on a CyVerse App modeled on the Moving Pictures tutorial.
qiime feature-classifier classify-sklearn
Plugin error from feature-classifier:
The scikit-learn version (0.22.1) used to generate this artifact does not match the current version of scikit-learn installed (0.21.2). Please retrain your classifier for your current deployment to prevent data-corruption errors.
Debug info has been saved to /tmp/qiime2-q2cli-err-0wywm1lw.log
My question is which classifier (greengenes) would work in this environment?