Update app.py

app.py

@@ -5,7 +5,7 @@ from PyPDF2 import PdfReader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.document_loaders import UnstructuredPDFLoader
 from langchain.text_splitter import CharacterTextSplitter
-from langchain.embeddings import HuggingFaceBgeEmbeddings
+from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS
 from langchain.chat_models import ChatOpenAI
 from langchain.memory import ConversationBufferMemory