Update app.py

app.py

@@ -5,9 +5,9 @@ from dotenv import load_dotenv
 from openai import AzureOpenAI
 
 from langchain_openai import AzureOpenAIEmbeddings, AzureChatOpenAI
+from langchain_chroma import Chroma
 from langchain.chains.query_constructor.base import AttributeInfo
 from langchain.retrievers.self_query.base import SelfQueryRetriever
-from langchain_community.vectorstores import Chroma
 from langchain.retrievers import ContextualCompressionRetriever
 from langchain.retrievers.document_compressors import CrossEncoderReranker
 from langchain_community.cross_encoders import HuggingFaceCrossEncoder