Nginx Web UI - How to PHP?

How to install PHP in https://nginxui.com?
I tried to

try_files $uri =404;

fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;

fastcgi_index index.php;

include fastcgi.conf;

but error occures...

Nginx Configuration Parse Error

2023/10/31 23:53:32 [emerg] 7645#7645: open() "/etc/nginx/fastcgi.conf" failed (2: No such file or directory) in /etc/nginx/sites-enabled/axis-group:10 nginx: [emerg] open() "/etc/nginx/fastcgi.conf" failed (2: No such file or directory) in /etc/nginx/sites-enabled/axis-group:10 nginx: configuration file /etc/nginx/nginx.conf test failed