清了浏览器缓存和换过浏览器(firefox、safri)尝试还是不行,使用curl -v https://gitlab-demo.com/ 测试也提示https证书有问题,If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).