问下为啥我的php会Access denied.，我php进程是www的，nginx也是www，文件用户也是www的

情况是这样的我安装了nginx，php7.4，用remi安装的
然后我配置了nginx user www;
配置的listen 是127.0.0.1:9000;
nginx 对php转发

 fastcgi_pass  127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_split_path_info  ^((?U).+\.php)(/?.+)$;
fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
fastcgi_param  PATH_INFO  $fastcgi_path_info;
fastcgi_param  PATH_TRANSLATED  $document_root$fastcgi_path_info;
include fastcgi_params;

然后我配置php-fpm.conf user 也是www，
然后我ps -ef |grep php

root      19146      1  0 12:05 ?        00:00:00 php-fpm: master process (/etc/opt/remi/php74/php-fpm.conf)
www       19147  19146  0 12:05 ?        00:00:00 php-fpm: pool www
www       19148  19146  0 12:05 ?        00:00:00 php-fpm: pool www
www       19149  19146  0 12:05 ?        00:00:00 php-fpm: pool www
www       19150  19146  0 12:05 ?        00:00:00 php-fpm: pool www
www       19151  19146  0 12:05 ?        00:00:00 php-fpm: pool www
www       19152  19146  0 12:05 ?        00:00:00 php-fpm: pool www

然后我ps -ef |grep nginx

root      17416      1  0 11:45 ?        00:00:00 nginx: master process nginx -c /etc/nginx/nginx.conf
www       18489  17416  0 11:58 ?        00:00:00 nginx: worker process
www       18490  17416  0 11:58 ?        00:00:00 nginx: worker process
www       18491  17416  0 11:58 ?        00:00:00 nginx: worker process
www       18492  17416  0 11:58 ?        00:00:00 nginx: worker process
www       18493  17416  0 11:58 ?        00:00:00 nginx: worker process
www       18494  17416  0 11:58 ?        00:00:00 nginx: worker process

我代码也是www用户的，不知为啥给我报Access denied.错误

nginx报这个错误，18500#18500: *61 FastCGI sent in stderr: "PHP message: PHP Warning:  Unknown: failed to open stream: Permission denied in Unknown on line 0Unable to open primary script: /home/www/test/public/index.php (Permission denied)" while reading response header from upstream, client: 127.0.0.1, server: , request: "GET /device/admin/uploadData HTTP/1.0", upstream: "fastcgi://127.0.0.1:9000", host: "10.23.23.12"