尝试加载CSS时抛出404

Question

所以我想使用以下代码行在我的树枝上加载CSS：

{% block stylesheets %}
    <link href="{{ asset('assets/bootstrap/dist/css/bootstrap.min.css') }}" rel="stylesheet" />
{% endblock %}

assets文件夹位于项目文件夹的根目录下。但是，当浏览器加载资产时，会抛出404。

这是我的Nginx配置：

server {
    server_name yventee-backoffice.local;
    root /var/www/html/backoffice/public;

    location / {
        # try to serve file directly, fallback to index.php
        try_files $uri /index.php$is_args$args;
    }

    location ~ ^/index\.php(/|$) {
        fastcgi_pass php:9000;
        fastcgi_split_path_info ^(.+\.php)(/.*)$;
        include fastcgi_params;

        # optionally set the value of the environment variables used in the application
        # fastcgi_param APP_ENV prod;
        # fastcgi_param APP_SECRET <app-secret-id>;
        # fastcgi_param DATABASE_URL "mysql://db_user:db_pass@host:3306/db_name";

        # When you are using symlinks to link the document root to the
        # current version of your application, you should pass the real
        # application path instead of the path to the symlink to PHP
        # FPM.
        # Otherwise, PHP's OPcache may not properly detect changes to
        # your PHP files (see https://github.com/zendtech/ZendOptimizerPlus/issues/126
        # for more information).
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        fastcgi_param DOCUMENT_ROOT $realpath_root;
        # Prevents URIs that include the front controller. This will 404:
        # http://domain.tld/index.php/some-path
        # Remove the internal directive to allow URIs like this
        internal;
    }

    location ~ \.php$ {
        return 404;
    }

    error_log /var/log/nginx/symfony_error.log;
    access_log /var/log/nginx/symfony_access.log;
}

为什么会这样？

谢谢！