Update app.py

app.py

@@ -64,7 +64,7 @@ def ask_question(query):
     if "rag_chain" not in globals():
         return "Please upload and process a PDF first."
     
-    response = rag_chain.invoke(query)
+    response = rag_chain.invoke(query).content
     return response
 
 # Gradio UI