path_input_folder == DEFAULT_INPUT_PATH
        and os.path.exists(os.path.join(path_input_folder, JSON_FNAME)) is False
    ):
        path_input_folder = os.path.join(PACKAGE_PATH, INPUT_FOLDER)

in ´A0_initialization.py´

This code is executed only if the path_input_folder is the default one (i.e. user did not provide it) and it happens that this path_input_folder does not exist in the system.

A warning should nevertheless be implemented here

Originally posted by @Bachibouzouk in #607 (comment)