ValueError: You are using a deprecated configuration of Chroma.

To keep it short, when I download your code and run, it throws the following error:

```
Traceback (most recent call last):
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 552, in _run_script
exec(code, module.__dict__)
File "/Users/alucard/llama2/searchpdf/app.py", line 75, in
main()
File "/Users/alucard/llama2/searchpdf/app.py", line 69, in main
answer, metadata = process_answer(question)
File "/Users/alucard/llama2/searchpdf/app.py", line 44, in process_answer
qa = qa_llm()
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/streamlit/runtime/caching/cache_utils.py", line 211, in wrapper
return cached_func(*args, **kwargs)
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/streamlit/runtime/caching/cache_utils.py", line 240, in __call__
return self._get_or_create_cached_value(args, kwargs)
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/streamlit/runtime/caching/cache_utils.py", line 266, in _get_or_create_cached_value
return self._handle_cache_miss(cache, value_key, func_args, func_kwargs)
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/streamlit/runtime/caching/cache_utils.py", line 320, in _handle_cache_miss
computed_value = self._info.func(*func_args, **func_kwargs)
File "/Users/alucard/llama2/searchpdf/app.py", line 36, in qa_llm
db = Chroma(persist_directory="db", embedding_function=embeddings, client_settings=CHROMA_SETTINGS)
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/langchain/vectorstores/chroma.py", line 119, in __init__
self._client = chromadb.Client(_client_settings)
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/chromadb/__init__.py", line 140, in Client
system = System(settings)
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/chromadb/config.py", line 227, in __init__
if settings[key] is not None:
File "/Users/alucard/mambaforge/envs/searchpdf/lib/python3.10/site-packages/chromadb/config.py", line 164, in __getitem__
raise ValueError(LEGACY_ERROR)
ValueError: You are using a deprecated configuration of Chroma.
```
It seems that Chroma has been updated but your code did not reflect that.

Just in case you want to know, here is the list when I run `conda list`.

Chromadb is `0.4.8`

```
accelerate 0.22.0 pypi_0 pypi
aiohttp 3.8.5 pypi_0 pypi
aiosignal 1.3.1 pypi_0 pypi
altair 5.1.1 pypi_0 pypi
anyio 4.0.0 pypi_0 pypi
async-timeout 4.0.3 pypi_0 pypi
attrs 23.1.0 pypi_0 pypi
backoff 2.2.1 pypi_0 pypi
bcrypt 4.0.1 pypi_0 pypi
beautifulsoup4 4.12.2 pypi_0 pypi
bitsandbytes 0.41.1 pypi_0 pypi
blinker 1.6.2 pypi_0 pypi
bs4 0.0.1 pypi_0 pypi
bzip2 1.0.8 h3422bc3_4 conda-forge
ca-certificates 2023.7.22 hf0a4a13_0 conda-forge
cachetools 5.3.1 pypi_0 pypi
certifi 2023.7.22 pypi_0 pypi
cffi 1.15.1 pypi_0 pypi
charset-normalizer 3.2.0 pypi_0 pypi
chroma-hnswlib 0.7.2 pypi_0 pypi
chromadb 0.4.8 pypi_0 pypi
click 8.1.7 pypi_0 pypi
coloredlogs 15.0.1 pypi_0 pypi
cryptography 41.0.3 pypi_0 pypi
dataclasses-json 0.5.14 pypi_0 pypi
einops 0.6.1 pypi_0 pypi
exceptiongroup 1.1.3 pypi_0 pypi
fastapi 0.99.1 pypi_0 pypi
filelock 3.12.3 pypi_0 pypi
flatbuffers 23.5.26 pypi_0 pypi
frozenlist 1.4.0 pypi_0 pypi
fsspec 2023.9.0 pypi_0 pypi
gitdb 4.0.10 pypi_0 pypi
gitpython 3.1.34 pypi_0 pypi
h11 0.14.0 pypi_0 pypi
httptools 0.6.0 pypi_0 pypi
huggingface-hub 0.16.4 pypi_0 pypi
humanfriendly 10.0 pypi_0 pypi
idna 3.4 pypi_0 pypi
importlib-metadata 6.8.0 pypi_0 pypi
importlib-resources 6.0.1 pypi_0 pypi
jinja2 3.1.2 pypi_0 pypi
joblib 1.3.2 pypi_0 pypi
jsonschema 4.19.0 pypi_0 pypi
jsonschema-specifications 2023.7.1 pypi_0 pypi
langchain 0.0.279 pypi_0 pypi
langsmith 0.0.33 pypi_0 pypi
libffi 3.4.2 h3422bc3_5 conda-forge
libsqlite 3.43.0 hb31c410_0 conda-forge
libzlib 1.2.13 h53f4e23_5 conda-forge
markdown-it-py 3.0.0 pypi_0 pypi
markupsafe 2.1.3 pypi_0 pypi
marshmallow 3.20.1 pypi_0 pypi
mdurl 0.1.2 pypi_0 pypi
monotonic 1.6 pypi_0 pypi
mpmath 1.3.0 pypi_0 pypi
multidict 6.0.4 pypi_0 pypi
mypy-extensions 1.0.0 pypi_0 pypi
ncurses 6.4 h7ea286d_0 conda-forge
networkx 3.1 pypi_0 pypi
nltk 3.8.1 pypi_0 pypi
numexpr 2.8.5 pypi_0 pypi
numpy 1.25.2 pypi_0 pypi
onnxruntime 1.15.1 pypi_0 pypi
openssl 3.1.2 h53f4e23_0 conda-forge
overrides 7.4.0 pypi_0 pypi
packaging 23.1 pypi_0 pypi
pandas 2.1.0 pypi_0 pypi
pdfminer-six 20221105 pypi_0 pypi
pillow 9.5.0 pypi_0 pypi
pip 23.2.1 pyhd8ed1ab_0 conda-forge
posthog 3.0.2 pypi_0 pypi
protobuf 4.24.2 pypi_0 pypi
psutil 5.9.5 pypi_0 pypi
pulsar-client 3.3.0 pypi_0 pypi
pyarrow 13.0.0 pypi_0 pypi
pycparser 2.21 pypi_0 pypi
pydantic 1.10.12 pypi_0 pypi
pydeck 0.8.0 pypi_0 pypi
pygments 2.16.1 pypi_0 pypi
pympler 1.0.1 pypi_0 pypi
pypika 0.48.9 pypi_0 pypi
python 3.10.12 h01493a6_0_cpython conda-forge
python-dateutil 2.8.2 pypi_0 pypi
python-dotenv 1.0.0 pypi_0 pypi
pytz 2023.3 pypi_0 pypi
pytz-deprecation-shim 0.1.0.post0 pypi_0 pypi
pyyaml 6.0.1 pypi_0 pypi
readline 8.2 h92ec313_1 conda-forge
referencing 0.30.2 pypi_0 pypi
regex 2023.8.8 pypi_0 pypi
requests 2.31.0 pypi_0 pypi
rich 13.5.2 pypi_0 pypi
rpds-py 0.10.0 pypi_0 pypi
safetensors 0.3.3 pypi_0 pypi
scikit-learn 1.3.0 pypi_0 pypi
scipy 1.11.2 pypi_0 pypi
sentence-transformers 2.2.2 pypi_0 pypi
sentencepiece 0.1.99 pypi_0 pypi
setuptools 68.1.2 pyhd8ed1ab_0 conda-forge
six 1.16.0 pypi_0 pypi
smmap 5.0.0 pypi_0 pypi
sniffio 1.3.0 pypi_0 pypi
soupsieve 2.5 pypi_0 pypi
sqlalchemy 2.0.20 pypi_0 pypi
starlette 0.27.0 pypi_0 pypi
streamlit 1.26.0 pypi_0 pypi
sympy 1.12 pypi_0 pypi
tenacity 8.2.3 pypi_0 pypi
threadpoolctl 3.2.0 pypi_0 pypi
tk 8.6.12 he1e0b03_0 conda-forge
tokenizers 0.13.3 pypi_0 pypi
toml 0.10.2 pypi_0 pypi
toolz 0.12.0 pypi_0 pypi
torch 2.0.1 pypi_0 pypi
torchvision 0.15.2 pypi_0 pypi
tornado 6.3.3 pypi_0 pypi
tqdm 4.66.1 pypi_0 pypi
transformers 4.32.1 pypi_0 pypi
typing-extensions 4.7.1 pypi_0 pypi
typing-inspect 0.9.0 pypi_0 pypi
tzdata 2023.3 pypi_0 pypi
tzlocal 4.3.1 pypi_0 pypi
urllib3 2.0.4 pypi_0 pypi
uvicorn 0.23.2 pypi_0 pypi
uvloop 0.17.0 pypi_0 pypi
validators 0.22.0 pypi_0 pypi
watchfiles 0.20.0 pypi_0 pypi
websockets 11.0.3 pypi_0 pypi
wheel 0.41.2 pyhd8ed1ab_0 conda-forge
xz 5.2.6 h57fd34a_0 conda-forge
yarl 1.9.2 pypi_0 pypi
zipp 3.16.2 pypi_0 pypi
```

Can you please help?

Thank you.