delete history

app.py

@@ -51,7 +51,7 @@ def clear(user_name, user_text, chatbot):
 
 def get_image(role):
     role_en = NAME_DICT[role]
-    return Image.open(f'images/{role_en}.jpg')
+    return Image.open(f'images/{role_en}.jpg'), None, None, []
 
 
 with gr.Blocks() as demo:
@@ -89,7 +89,7 @@ with gr.Blocks() as demo:
                      'Sheldon', 'Raj', 'Penny',
                      '韦小宝', '乔峰', '神里绫华',
                      '雷电将军', '于谦'], label="characters", value='凉宫春日')
-    role.change(get_image, role, role_image)
+    role.change(get_image, role, [role_image, user_name, user_text, chatbot])
     user_text.submit(fn=get_response, inputs=[user_name, user_text, role, chatbot], outputs=[chatbot])
     submit.click(fn=get_response, inputs=[user_name, user_text, role, chatbot], outputs=[chatbot])
     clean.click(clear, [user_name, user_text, chatbot], [user_name, user_text, chatbot])