Streamlit.io App - Summvis NLP

Hello, I just discovered the Streamlit framework via Summvis App. Install to this point has been smooth. I am however receiving the following error when trying to open the Summvis app. I thank you in advance for any assistance and look forward to learning more about Streamlit.
This is the Summvis App repo. Thank you. [GitHub - robustness-gym/summvis: SummVis is an interactive visualization tool for text summarization.]
(GitHub - robustness-gym/summvis: SummVis is an interactive visualization tool for text summarization.)

OSError: [E050] Can’t find model ‘en_core_web_sm’. It doesn’t seem to be a Python package or a valid path to a data directory.

Traceback:

File "/home/modern/.local/lib/python3.8/site-packages/streamlit/script_runner.py", line 333, in _run_script
    exec(code, module.__dict__)File "/home/modern/summvis/summvis.py", line 343, in <module>
    nlp, is_lg = get_nlp()File "/home/modern/.local/lib/python3.8/site-packages/streamlit/caching.py", line 603, in wrapped_func
    return get_or_create_cached_value()File "/home/modern/.local/lib/python3.8/site-packages/streamlit/caching.py", line 587, in get_or_create_cached_value
    return_value = func(*args, **kwargs)File "/home/modern/summvis/summvis.py", line 60, in get_nlp
    nlp = spacy.load("en_core_web_sm")File "/home/modern/.local/lib/python3.8/site-packages/spacy/__init__.py", line 47, in load
    return util.load_model(name, disable=disable, exclude=exclude, config=config)File "/home/modern/.local/lib/python3.8/site-packages/spacy/util.py", line 329, in load_model
    raise IOError(Errors.E050.format(name=name))