Update app.py

app.py

@@ -1,5 +1,5 @@
 import gradio as gr
-
+import openai
 
 def echo(message, chat_history):
         bot_message = 'echo ' + message
@@ -19,7 +19,7 @@ with gr.Blocks() as demo:
 
     # OpenAI key
     openai_key_textbox = gr.Textbox(label='OpenAI Key')
-    openai_key_button = gr.Button(label='Test OpenAI Key')
+    openai_key_button = gr.Button(value='Test OpenAI Key')
 
     # Titles
     with gr.Row():