Update app.py

app.py

@@ -24,10 +24,8 @@ if st.session_state.selected_page == 'What is NLP?':
     st.title('What is Natural Language Processing (NLP)?')
 elif st.session_state.selected_page == 'NLP Lifecycle':
     st.title('Natural Language Processing (NLP) Lifecycle')
-    if st.session_state.selected_page == 'Problem Definition':
+    if sidebar_option  == 'Problem Definition':
         st.title('Steps in the Natural Language Processing (NLP) lifecycle:')
-    elif st.session_state.selected_page == 'NLP Techniques':
-        st.title('Natural Language Processing (NLP) Lifecycle')
 elif st.session_state.selected_page == 'NLP Techniques':
     st.title('Techniques in Natural Language Processing (NLP)')