Update app.py

app.py

@@ -30,7 +30,11 @@ input = st.text_input("Ask me 🤗")
 message_history.append(input)
 
 with placeholder.container():
-    message(message_history[-1]) # display the latest message
+    if message_history[-1] != "":
+        message(message_history[-1]) # display the latest message
+    else:
+        message(message_history[-2])
+        
 
 message(input, is_user=True)  # align's the message to the right