Codeigniter Nginx Web config

gistfile1.conf

upstream php {
    server unix:/var/run/php/php7.2-fpm.sock;
}

server {
    listen       80;
    server_name  www.example.com example.com;

    root /var/www/example.com;
    index index.html index.php;

    # Enable rewrite error log
    error_log /var/www/example.com/storage/logs/error.log;
    access_log /var/www/example.com/storage/logs/access.log;

    # Any HTTP request other than those for assets folder, files folder and robots.txt
    # is treated as a request for your index.php file.
    location ~* ^/(assets|files|robots\.txt)(\?[0-9]+) { }

    location / {
        try_files $uri $uri/ /index.php;
    }

    # Pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass   php;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include        /etc/nginx/fastcgi_params;
    }

    # Deny access to .htaccess files, if Apache's document root
    # concurs with Nginx's one
    location ~ /\.ht {
        deny  all;
    }
}