runtime error

Cloning into 'shakespeare'... Traceback (most recent call last): File "/home/user/app/app.py", line 24, in <module> data = bshtml_dir_loader.load() File "/home/user/.local/lib/python3.10/site-packages/langchain/document_loaders/directory.py", line 156, in load self.load_file(i, p, docs, pbar) File "/home/user/.local/lib/python3.10/site-packages/langchain/document_loaders/directory.py", line 105, in load_file raise e File "/home/user/.local/lib/python3.10/site-packages/langchain/document_loaders/directory.py", line 99, in load_file sub_docs = self.loader_cls(str(item), **self.loader_kwargs).load() File "/home/user/.local/lib/python3.10/site-packages/langchain/document_loaders/html_bs.py", line 49, in load soup = BeautifulSoup(f, **self.bs_kwargs) File "/home/user/.local/lib/python3.10/site-packages/bs4/__init__.py", line 250, in __init__ raise FeatureNotFound( bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?

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