Update app.py

app.py

@@ -75,9 +75,9 @@ Bem vindo ao **{TITLE}**! Pergunte algo como:
 "{EXAMPLE_INPUT}"
 """
 
-chatbot_preview = gr.Chatbot(layout="panel", value=[(None, welcome_preview_message)])
+chatbot_preview = gr.Chatbot(layout="panel", value=[(None, welcome_preview_message)],
     avatar_images=["./user.png", "./botz.png"], bubble_full_width=False, show_label=False, show_copy_button=True,)
-
+    
 textbox_preview = gr.Textbox(scale=7, container=False, lines=3, value=EXAMPLE_INPUT)
 
 demo = gr.ChatInterface(test_preview_chatbot, chatbot=chatbot_preview, textbox=textbox_preview, submit_btn='Perguntar', retry_btn=None, clear_btn=None, undo_btn=None)