Alibi detect image build fails to build in master

[axsaucedo]

Image fails with fbprophet error:

#8 444.3         import pystan
#8 444.3     ModuleNotFoundError: No module named 'pystan'
#8 444.3     ----------------------------------------
#8 444.3 ERROR: Command errored out with exit status 1: /opt/conda/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-acw7dgzx/fbprophet_11c6e94b66084feeb5c5295021cc3929/setup.py'"'"'; __file__='"'"'/tmp/pip-install-acw7dgzx/fbprophet_11c6e94b66084feeb5c5295021cc3929/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-_bl6mvrl/install-record.txt --single-version-externally-managed --compile --install-headers /opt/conda/include/python3.7m/fbprophet Check the logs for full command output.
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executor failed running [/bin/sh -c pip install -r requirements_server.txt]: exit code: 1