ModuleNotFoundError for matplotlib, unable to deploy

Hello from a newbie,
I recently deployed an application. Everytime it is refreshed, it throws the error: ModuleNotFoundError. I have attached an image of my requirement.txt file as well as the git repository link.
Please help me out here!




https://github.com/KurooAMV/Pneumonia-Detection-Model.git

According to the docs it must be requirements.txt.