phpmyadmin空白页面（nginx）（ubuntu xenial）（php 7）

Question

我已经安装了phpmyadmin并对其进行了符号链接。但是当我转到hostname / phpmyadmin时，它会在标题栏上返回一个带有phpmyadmin图标的空白页面。

我尝试了很多解决方案，但无法找到问题所在：（

服务器配置：

 `  server {
   # listen 80 ;
   # listen [::]:80 default_server;

    # SSL configuration
    #
     listen 443 ssl default_server;
     listen [::]:443 ssl default_server;
    #
    # Note: You should disable gzip for SSL traffic.
    # See: https://bugs.debian.org/773332
    #
    # Read up on ssl_ciphers to ensure a secure configuration.
    # See: https://bugs.debian.org/765782
    #
    # Self signed certs generated by the ssl-cert package
    # Don't use them in a production server!
    #
    # include snippets/snakeoil.conf;

    root /var/www/laravel/public;

    # Add index.php to the list if you are using PHP
    index index.php  index.html index.htm index.nginx-debian.html;

     server_name example.com ;

    ssl on;
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;


    location / {
            # First attempt to serve request as file, then
            # as directory, then fall back to displaying a 404.
            try_files $uri $uri/ /index.php?$query_string;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

    location ~ \.php$ {
                                include snippets/fastcgi-php.conf;

    #       # With php7.0-cgi alone:
    #       fastcgi_pass 127.0.0.1:9000;



    #       # With php7.0-fpm:
            fastcgi_pass unix:/run/php/php7.0-fpm.sock;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    location ~ /\.ht {
            deny all;
    }
            location ~ /.well-known {
            allow all;}


 }


# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
server {
       listen 80;
#       listen [::]:80;
#
     server_name example.com;
#
#       root /var/www/example.com;
#       index index.html;
#
#       location / {
#               try_files $uri $uri/ =404;
#       }

     return 301 https://example.com$request_uri;
}

`