1. 后台登录失败：
提示：
Failed to send the message. Please contact the administrator You need to configure Two-Factor Authorization in order to proceed to your store's admin area An E-mail was sent to you with further instructions
解决：
docker环境进入php容器 ： docker exec -ti dcroot-php74-1 /bin/bash
禁用 two Factor Authentication 模块。 php bin/magento module:disable Magento_TwoFactorAuth