css 和 js 在 nginx 子位置中被视为文本

Question

我有一个网站 A，它运行良好。当访问网站 A/backend 时，nginx 内会使用子位置来为另一个网站提供服务。

使用我的配置，当转到 websiteA/backend 时会返回一个空白页，并且 js 和 css 会作为 html 返回。

你能帮助我吗？谢谢。

我的虚拟主机：

 ### Use to not log the route53 health checks in the logs
map $http_user_agent $log_ua {
        "ELB-HealthChecker/2.0" 0;
        default 1;
}

server {
        server_name websiteA www.websiteA;
        root /var/www/websiteA/;
        index index.php index.html;
        access_log /var/log/nginx/websiteA.access.log combined if=$log_ua;
        error_log /var/log/nginx/websiteA.com.error.log;

        # Return a 404 not found for every hidden files
        location ~ /\. {
                deny all;
                return 404;
        }

        # set expiration of assets to MAX for caching
        location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
                expires max;
                log_not_found off;
        }

        location / {
                # Check if a file or directory index file exists, else route it to index.php.
                try_files $uri  /index.html;
        }

        location ~ ^/backend/ {
                alias /var/www/backend/;
                try_files $uri $uri/ /index.php?$args;
                location ~* \.php$ {
                        fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
                        fastcgi_split_path_info ^(.+\.php)(/.+)$;
                        fastcgi_param PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin;
                        fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
                        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
                        fastcgi_index index.php;
                        fastcgi_param CI_ENV test;
                        fastcgi_param DOMAIN test;
                        include fastcgi.conf;
                        }
        }

        location ~ /(_sql|_templates|application|changelogs|docs|uploads|CHANGELOG.md|CSVTranslator.js|JSONUpdater.js|README.md|bower.json|composer.json|composer.lock|g_i18n_extractor.js|gulpfile.js|package-lock.json|package.json|robots.txt)
                 {
                 deny all;
                 return 404;
         }



}

感谢您的帮助。