Update app.py

app.py

@@ -13,13 +13,11 @@ from typing import List, Tuple, Dict, Any
 import faiss
 import pickle
 from sentence_transformers import SentenceTransformer
-from langchain.vectorstores import FAISS
-from langchain.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import FAISS
+from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.schema import Document
-from langchain.retrievers import ContextualCompressionRetriever
-from langchain.retrievers.document_compressors import LLMChainExtractor
-from langchain.chat_models import ChatOpenAI
+from langchain_openai import ChatOpenAI
 from langchain.prompts import ChatPromptTemplate
 from langchain.schema.runnable import RunnablePassthrough
 from langchain.schema.output_parser import StrOutputParser
@@ -450,4 +448,4 @@ if __name__ == "__main__":
         server_port=7860,
         share=False,
         show_error=True
-    )
+    )