Ensure your .htaccess and index.php files are in the same public-accessible directory. The .htaccess file should contain this code:
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^ index.php [QSA,L]
This is an example Nginx virtual host configuration for the domain example.com. It listens for inbound HTTP connections on port 80. It assumes a PHP-FPM server is running on port 9000. You should update the server_name, error_log, access_log, and root directives with your own values. The root directive is the path to your application’s public document root directory; your Slim app’s index.php front-controller file should be in this directory.
server {
listen 80;
server_name example.com;
index index.php;
error_log /path/to/example.error.log;
access_log /path/to/example.access.log;
root /path/to/public;
location / {
try_files $uri /index.php$is_args$args;
}
location ~ \.php {
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_index index.php;
fastcgi_pass 127.0.0.1:9000;
}
}
https://www.slimframework.com/docs/v3/start/web-servers.html