cleaning req

main.py

@@ -17,7 +17,7 @@ llm = Anyscale(model="mistralai/Mistral-7B-Instruct-v0.1", api_key=os.getenv("AN
 embed_model = VoyageEmbedding(model_name="voyage-01", voyage_api_key=os.getenv("VOYAGE_API_KEY"))
 service_context = ServiceContext.from_defaults(llm=llm, embed_model=embed_model)
 
-if "index" in os.list():
+if "index" in os.listdir():
     storage_context = StorageContext.from_defaults(persist_dir=Path("./index"))
 else: 
     UnstructuredReader = download_loader('UnstructuredReader')