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Thanks for the directions and the prompt response @Caroline.
I do not think the code itself has any errors, or at least I think so, so I haven’t posted any snippet related to my code. The code runs locally as usual with no errors. However, I have added the link to the GitHub repo as you mentioned.
The error message that you are seeing is PyWRY telling you that additional dependencies are needed, in particular, the libwebkit2gtk-4.0-dev package. Streamlit Cloud is a Linux Debian machine and according to the platform-specific notes of PyWRY, there is just this extra step to get the package running on Linux.