fixing none output issue

app.py

@@ -95,11 +95,11 @@ OPENAI_API_KEY = ''
 #         error_message = f"An unexpected error: {e}"
 #         return error_message, chat_history
 
-# def get_opeanai_key(openai_key):
-#     global OPENAI_API_KEY
-#     OPENAI_API_KEY=openai_key
+def get_opeanai_key(openai_key):
+    global OPENAI_API_KEY
+    OPENAI_API_KEY=openai_key
 
-#     return {chatbot_col: gr.Column(visible=True)}
+    return {chatbot_col: gr.Column(visible=True)}
 
 
 def slow_echo(usr_message, chat_history):
@@ -156,12 +156,12 @@ with gr.Blocks() as demo:
     btn = gr.Button(value="Submit")
 
     with gr.Column(visible=False) as chatbot_col:
-      chatbot = gr.Chatbot()
-      msg = gr.Textbox(label='Type in your questions about Chartis here and press Enter!',
+        chatbot = gr.Chatbot()
+        msg = gr.Textbox(label='Type in your questions about Chartis here and press Enter!',
                         placeholder='Type in your questions.', scale=7)
-      clear = gr.ClearButton([msg, chatbot])
-
-      msg.submit(slow_echo, [msg, chatbot], [msg, chatbot])
+        clear = gr.ClearButton([msg, chatbot])
+        
+        msg.submit(slow_echo, [msg, chatbot], [msg, chatbot])
 
     btn.click(get_opeanai_key, inputs=[openai_gpt_key], outputs=[chatbot_col])