Update app.py

app.py

@@ -15,6 +15,7 @@ from langchain.vectorstores import Chroma
 from utills import load_txt_documents, split_docs, load_uploaded_documents, retriever_from_chroma
 from langchain.text_splitter import TokenTextSplitter, RecursiveCharacterTextSplitter
 from langchain_community.document_loaders.directory import DirectoryLoader
+from htmlTemplates import css, bot_template, user_template