NGINX上安装的SSL证书显示证书在浏览器中无效

Question

我从客户端收到了SSL证书，可以将其安装在他的Ubuntu服务器上。 该服务器正在使用NGINX作为Web服务器，我已经按照所有必需的步骤进行操作，但是浏览器仍然显示证书无效。

这就是我所做的：

编辑了我的sites-available文件：

server {
        listen 443 ssl;
        listen [::]:443 ssl;

        include snippets/iltlvdigitalit.conf;
        include snippets/ssl-params.conf;

        server_name iltlvdigitalit;
        root /var/www/html/digital-system/front-end/dist/digital;
        server_tokens off;
        index index.html index.htm;

        location / {
                try_files $uri $uri/ =404;
        }

        location /api/v1/ {
                proxy_pass http://localhost:8080;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
        }
}

iltlvdigitalit.conf

ssl_certificate /etc/ssl/certs/iltlvdigitalit.cert;
ssl_certificate_key /etc/ssl/iltlvdigitalit_new.key;

ssl-params.conf

ssl_protocols TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384;
ssl_ecdh_curve secp384r1; # Requires nginx >= 1.1.0
ssl_session_timeout  10m;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets off; # Requires nginx >= 1.5.9
# ssl_stapling on; # Requires nginx >= 1.3.7
# ssl_stapling_verify on; # Requires nginx => 1.3.7
resolver 8.8.8.8 8.8.4.4 valid=300s;
resolver_timeout 5s;
add_header X-Frame-Options DENY;
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";

不知道出了什么问题。谢谢！ ：）