Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 from langchain_community.document_loaders import WebBaseLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain.vectorstores import Chroma
+from langchain_community.vectorstores import Chroma
 from langchain_openai import OpenAIEmbeddings
 from langchain_openai import ChatOpenAI
 from langchain import hub