Update app.py

app.py

@@ -156,7 +156,7 @@ if st.button("Sentiment Analysis", type="secondary"):
                         plt.axis('off')
                         st.pyplot(fig)
                     
-                    result1 = result.drop(result.columns[['Review Number']], axis=1)
+                    result1 = result.drop(result.columns['Review Number'], axis=1)
                     csv = result1.to_csv(index=False)
                     st.download_button(
                         label="Download data as CSV",