Update app.py

app.py

@@ -534,7 +534,7 @@ def main():
                             attachments = row.get('attachments', [])  # Safely get attachments
                             if attachments:
                                 with st.expander(f"📎 Attachments ({len(attachments) if isinstance(attachments, list) else 0})"):
-                                    for att in attachments:
+                                    for att in (attachments if isinstance(attachments, list) else []):
                                         st.markdown(f"""
                                         <div style="margin:0.5rem 0; padding:0.5rem; border-radius:5px; background:#f0f2f6;">
                                             <div style="display:flex; align-items:center; gap:1rem;">