Rearranged the submit button.

app.py

@@ -68,8 +68,8 @@ def handle_submit():
     else:
         st.write("Please enter a question.")
 
-if st.button("Ask"): 
-    handle_submit()
 
 st.text_input('Ask me a question', key='user_input', on_change=handle_submit)
+if st.button("Ask"): 
+    handle_submit()
 st.text_area("Conversation History", value=st.session_state.conversation, height=300, max_chars=None)