Update app.py

app.py

@@ -153,10 +153,10 @@ with tab2:
     st.header("Question Answering Pipeline")
     st.write("Ask questions about news content and get answers from our AI model.")
     
+    qa_df = uploaded_file
     
-    if qa_file is not None:
-        qa_df = uploaded_file
-
+    if qa_df is not None:
+        
         context = ' '.join(qa_df['predicted_category'].tolist())
         st.write(f"Loaded {len(qa_df)} news excerpts")