Update app.py

app.py

@@ -17,7 +17,8 @@ import uuid  # For generating unique filenames
 
 # Updated imports to address LangChain deprecation warnings:
 from langchain_groq import ChatGroq
-from langchain.schema import HumanMessage
+#from langchain.schema import HumanMessage
+from langchain_core.messages import HumanMessage
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_community.vectorstores import Chroma
 from langchain_community.embeddings import HuggingFaceEmbeddings