после того как прописываю /check, в терминале такая ошибка:

Traceback (most recent call last):
File "C:\Users\admin\AppData\Local\Programs\Python\Pyth on39\lib\site-packages\vkbottle\dispatch\bot_router.py", line 20, in route
await view.handle_event(event, ctx_api, self.state_dispenser)
File "C:\Users\admin\AppData\Local\Programs\Python\Pyth on39\lib\site-packages\vkbottle\dispatch\views\bot\message.py", line 60, in handle_event
handler_response = await handler.handle(message, **context_variables)
File "C:\Users\admin\AppData\Local\Programs\Python\Pyth on39\lib\site-packages\vkbottle\dispatch\handlers\from_func_hand ler.py", line 26, in handle
return await self.handler(event, **context)
File "C:\Users\admin\Desktop\main.py", line 18, in check
status = qiwi.check_status(bill_id)
NameError: name 'qiwi' is not defined

помогите решить