输入localhost:8080/login?username=lrui&password=123456页面无显示内容。

打开浏览器调试窗口这里有这段话：

Deprecation] HTML Imports is deprecated and will be removed in M80, around February 2020. Please use ES modules instead. See https://www.chromestatus.com/features/5144752345317376 and https://developers.google.com/web/updates/2019/07/web-components-time-to-upgrade for more details.

这是为啥？