No module named matplotlib

why is it not working?

Hi @eaglezero, welcome to the Streamlit community!

If you look at the error message in the terminal window on the right, it appears that something is trying to be compiled. Not sure what ta-lib is, but it’s probably the case that you need to add it to a packages.txt file to add it as a system dependency:


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UNDER stood, thank you .I didn’t see that before.
I made the same app on heroku as I asked in my other topic there I dealt with this problem but I am getting R10 error ,any idea what to do?