Update app.py

app.py

@@ -506,6 +506,7 @@ if query or search_button:
                 st.markdown(
                     f"**[Full Text Read]({doi_link})** 🔗", unsafe_allow_html=True
                 )
+    if plot_data:
         with st.spinner("Under statistics..."):
             plot_df = pd.DataFrame(plot_data)
     
@@ -550,6 +551,7 @@ if query or search_button:
             # Show the pie chart in the Streamlit app
             st.plotly_chart(fig, use_container_width=True)
             
+    if abstracts:
         with st.spinner("LLM is summarizing..."):
             prompt = st.text_area("Enter your summary prompt", value=LLM_prompt)
             summary_button = st.button("AI summary")