Update app.py

app.py

@@ -5,7 +5,7 @@ import json
 from langchain.document_loaders import DataFrameLoader
 from langchain.text_splitter import CharacterTextSplitter
 from langchain.llms import HuggingFaceHub
-from langchain.embeddings import HuggingFaceHubEmbeddings
+from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import Chroma
 from langchain.chains import RetrievalQA