I have the same problem now - I’ve managed to load the hello app without a problem now, but my own app keeps giving the same error, as you’re describing:

I get the overall ‘Streamlit cannot hash an object of type <class ‘os._Environ’>.,’
and then the same error for every single function that was using cache: ‘Streamlit failed to hash an object of type <class ‘function’>.,’
underneath the warnings is the error call stack - see attached below:

streamlit error.png698×425 18.7 KB



Update: This error is most likely covered here: https://github.com/streamlit/streamlit/issues/242 32 and as per Thiago’s message earlier today, it has been fixed and should go into prod version over the next couple of days (Blindly following setup instructions 9)