🐛 fix(__main__.py): fix issue where app was not serving the index.html file when a 404 error occurred

✨ feat(main.py): remove static_path argument from create_app function
The fix to the issue where the app was not serving the index.html file when a 404 error occurred was done by adding an exception handler to the app that returns the index.html file when a 404 error occurs. The create_app function was modified to remove the static_path argument as it was not being used in the function.