Module not found when deploying streamlit via github

Hi,

I am getting the following error on my app:
ModuleNotFoundError: No module named ‘sklearn’

I have triple checked my requirements.txt, which specifies sklearn with the correct version, so am I at a loss about how to troubleshoot this issue.

Here is my app:
https://share.streamlit.io/mvantieghem/mcc_metastasis/master/live_app.py