Update app.py

app.py

@@ -79,7 +79,7 @@ if query:
     st.pyplot(fig)
     plt.clf()
 
-    csv = table.head(100)
+    csv = table.head(100).to_csv().encode('utf-8')
     st.download_button(
         label="download top 100 words (csv)",
         data=csv,
@@ -123,7 +123,7 @@ if query:
     # # display the treemap in Streamlit
     st.pyplot(fig2)
 
-    csv = df1.head(100)
+    csv = df1.head(100).to_csv().encode('utf-8')
     st.download_button(
         label="download top 100 genes (csv)",
         data=csv,