Update app.py

app.py

@@ -8,11 +8,11 @@ from langchain.chains import ConversationalRetrievalChain
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain_community.llms import HuggingFaceEndpoint
 from langchain.memory import ConversationBufferMemory
-from langchain.retrievers import BM25Retriever, EnsembleRetriever
-from langchain.chains.query_constructor.base import AttributeInfo
-from langchain.chains import create_query_chain
-from langchain.retrievers.self_query.base import SelfQueryRetriever
-from langchain.chains.query_constructor.schema import FieldInfo
+from langchain_community.retrievers import BM25Retriever, EnsembleRetriever  # Corrected import
+#from langchain.chains.query_constructor.base import AttributeInfo # Removed deprecated code
+#from langchain.chains import create_query_chain # Removed deprecated code
+#from langchain.retrievers.self_query.base import SelfQueryRetriever # Removed deprecated code
+#from langchain.chains.query_constructor.schema import FieldInfo # Removed deprecated code
 from langchain.retrievers.multi_query import MultiQueryRetriever
 
 api_token = os.getenv("FirstToken")