Update app.py

app.py

@@ -1,8 +1,7 @@
 from langchain.text_splitter import CharacterTextSplitter
-from langchain.embeddings import OpenAIEmbeddings
 from langchain.vectorstores import FAISS
 from langchain.chat_models import ChatOpenAI
-from langchain_openai import AzureChatOpenAI
+from langchain_openai import AzureChatOpenAI,AzureOpenAIEmbeddings
 from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationChain
 from langchain.chains import ConversationalRetrievalChain