Update app.py

app.py

@@ -18,7 +18,8 @@ st.markdown("Let's create a magical story just for you!")
 # User input
 child_name = st.text_input("What's your name, young storyteller?", on_change=child_update)
 st.write('Your name is ', child_name)
-st.write('The state is ', st.session_state['name'])
+if 'name' in st.session_state:
+    st.write('The state is ', st.session_state['name'])
 story_theme = st.selectbox("What would you like your story to be about?", 
                            ["Space Adventure", "Magical Forest", "Underwater World", "Dinosaur Discovery"])