Update app.py

app.py

@@ -397,7 +397,7 @@ def perform_ai_lookup(q, vocal_summary=True, extended_refs=False,
     st.write("## Individual Papers (Most Recent First)")
     for idx, paper in enumerate(parsed_refs):
         section_key = f"section_{idx}"
-        with st.expander(f"{idx+1}. {paper['title']} - {paper['year'] if paper['year'] else 'Unknown Year'}", expanded=False, key=section_key):
+        with st.expander(f"{idx+1}. {paper['title']} - {paper['year'] if paper['year'] else 'Unknown Year'}", expanded=False):
             st.markdown(f"**Summary:** {paper['summary']}")
             colA, colB = st.columns(2)
             with colA: