Certificate verification failed: The certificate is NOT trusted.

• https://www.mochengli.cn/tech_pro/1415

1.更改源文件，将所有的https改成http：

sudo vi /etc/apt/sources.list

2.sudo apt-get update

3.sudo apt-get install --reinstall ca-certificates

4.最后按照步骤一将http改回https

5.再次更新源sudo apt-get update

6.至此可以正常安装软件了
sudo apt-get install XX