set initial contents for debugging purposes

app.py

@@ -4,7 +4,7 @@ import gradio as gr
 
 
 def chat(message, history):
-    history = history or []
+    history = history or [('hi', 'hello'), ('what ya doing', 'nothing')]
     if message.startswith("How many"):
         response = random.randint(1, 10)
     elif message.startswith("How"):
@@ -14,7 +14,7 @@ def chat(message, history):
     else:
         response = "I don't know"
     history.append((message, response))
-    return history
+    return history, history
 
 chatbot = gr.Chatbot(color_map=("green", "gray"))
 demo = gr.Interface(