Weird problem - site works, except for the index page

I have an Nginx setup that serves a couple of websites for years and I ve never had any problems. Today I finally decided to try to add some certificates, with certbot and it didn’t go as planned - the site, fully static html - became inaccessible. I manually edited the server block file and removed all the lines added by the certbot, but to no luck. All the pages of the site now work EXCEPT for the index page.

server {
    listen 80;
    listen [::]:80;

    root /var/www/freethrow/html;
    index index.html index.htm index.nginx-debian.html;
    
    server_name freethrow.rs www.freethrow.rs;
    
    location / {
	try_files $uri $uri/ =404;
	}
}

Any help is more than welcome.