Update app.py

app.py

@@ -18,8 +18,16 @@ 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_core.messages import HumanMessage
-from langchain.text_splitter import RecursiveCharacterTextSplitter
+
+from langchain_text_splitters import RecursiveCharacterTextSplitter
+
+try:
+    # For newer versions
+    from langchain_text_splitters import RecursiveCharacterTextSplitter
+except ImportError:
+    # For older versions
+    from langchain.text_splitter import RecursiveCharacterTextSplitter
+
 from langchain_community.vectorstores import Chroma
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain.docstore.document import Document