条带API;{'error':'invalid\u grant','error\u description':'此授权码已被使用

我正在使用条带API,并试图将连接帐户密钥保存在db中。但我无法成功拯救他们,一件奇怪的事情正在发生。 我的代码在这里

resp = stripe_connect_service.get_raw_access_token(method='POST', data=data)
connect_account_info = json.loads(resp.text)
connect_public_key = connect_account_info['stripe_publishable_key']
connect_access_token = connect_account_info['access_token']
connect_user_id = connect_account_info['stripe_user_id']
connect_refresh_token = connect_account_info['refresh_token']

print(connect_public_key)
print(connect_access_token)
print(connect_user_id)
print(connect_refresh_token)

form = Form()
if form.validate_on_submit():
    data = Data(connect_public_key=connect_public_key, connect_access_token=connect_access_token, connect_user_id=connect_user_id, connect_refresh_token=connect_refresh_token)
    db.session.add(data)
    db.session.commit()

因此,在获取令牌并完成从Stripe Connect页面重新导入的页面上的表单提交后,我将保存数据。print实际上显示连接帐户密钥,但在提交表单后,错误显示 connect\u public\u key=connect\u account\u info['stripe\u publishable\u key'] KeyError:“stripe\u publishable\u密钥” 即使打印确实有效。

当我运行调试器时,错误如下所示 {'error': 'invalid_grant', 'error_description': 'This authorization code has already been used.

如何修复此错误?