Update app.py

app.py

@@ -13,7 +13,7 @@ from langchain.chains.combine_documents import create_stuff_documents_chain
 from langchain_community.chat_message_histories.streamlit import StreamlitChatMessageHistory
 from langchain.prompts import PromptTemplate
 from langchain.vectorstores import Chroma
-from utils import load_txt_documents, split_docs, load_uploaded_documents, retriever_from_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