ModuleNotFoundError: No module named 'bs4'

(bilingual_book_maker) drake.shi@drakeshibitgetcom bilingual_book_maker % python make_book.py --book_name test_books/animal_farm.epub --ollama_model "qwen2:7b" Traceback (most recent call last): File "/Users/drake.shi/Downloads/bilingual_book_maker/make_book.py", line 1, in from book_maker.cli import main File "/Users/drake.shi/Downloads/bilingual_book_maker/book_maker/cli.py", line 6, in from book_maker.loader import BOOK_LOADER_DICT File "/Users/drake.shi/Downloads/bilingual_book_maker/book_maker/loader/init.py", line 1, in from book_maker.loader.epub_loader import EPUBBookLoader File "/Users/drake.shi/Downloads/bilingual_book_maker/book_maker/loader/epub_loader.py", line 10, in from bs4 import BeautifulSoup as bs ModuleNotFoundError: No module named 'bs4'