Reposting#340 (comment) as an issue.

I'm observingimportlib_metadata.packages_distributions() throw the following error:

File"/opt/mlflow/mlflow/utils/requirements_utils.py",line129,in<module>_MODULE_TO_PACKAGES=importlib_metadata.packages_distributions()File"/miniconda/lib/python3.9/site-packages/importlib_metadata/__init__.py",line1016,inpackages_distributionsforpkgin_top_level_declared(dist)or_top_level_inferred(dist):File"/miniconda/lib/python3.9/site-packages/importlib_metadata/__init__.py",line1026,in_top_level_inferredreturn {

https://github.com/mlflow/mlflow/runs/3428616955#step:5:7078

It looks like the line 1028 in_top_level_inferred tries to iterate ondist.files that can be None and then throws the error above:

https://docs.python.org/3/library/importlib.metadata.html#distribution-files says:

In the case where the metadata file listing files (RECORD or SOURCES.txt) is missing,files() will return None. The caller may wish to wrap calls to files() in always_iterable or otherwise guard against this condition if the target distribution is not known to have the metadata present.