请问如何创建 https 开头的网站？

本地创建的网址如下：http://larabbs.app/topics
用Google访问，则会出现

您的连接不是私密连接
攻击者可能会试图从 larabbs.app 窃取您的信息（例如：密码、通讯内容或信用卡信息）。了解详情
NET::ERR_CERT_AUTHORITY_INVALID
Subject: larabbs.app

Issuer: larabbs.app

Expires on: 2019年4月27日

Current date: 2018年5月2日

PEM encoded chain:
-----BEGIN CERTIFICATE-----
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rt6g
-----END CERTIFICATE-----