Fixed problem with referencing undeclared variable

app.py

@@ -45,7 +45,7 @@ st.markdown(
 placeholder = st.empty()
 # Define the placeholder globally (outside columns)
 if st.session_state and st.session_state.user_input:
-    placeholder.markdown(f"session: {user_input}")
+    placeholder.markdown(f"session: {st.session_state.user_input}")
     st.write("session: " + st.session_state.user_input)
 else:
     placeholder.markdown(f'<div class="scrollable-div"><p>Welcome! I am your Adrega AI assistant</p></div>', unsafe_allow_html=True)