インストール時のエラーについて

...
    index index.php index.html index.htm;
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_intercept_errors  on;
        fastcgi_index  index.php;
        include  fastcgi_params;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        fastcgi_pass  unix:/var/run/php-fpm/php-fpm70.sock;
    }
    location / {
        #try_files $uri $uri/ /index.php?$uri&$args;
    }
}

location / {
try_files $uri $uri/ /index.php?$uri&$args;
}

server {
    listen   80;
    server_name example.com;

    root   /path/to/basercms_root/app/webroot/; # ルートを指定
    index  index.php;

    access_log /path/to/log_dir/access.log;
    error_log /path/to/log_dir/error.log;


    location / {
        try_files $uri $uri/ /index.php?$uri&$args; # 下記参照※
    }