Droplet "has been blocked by CORS policy: No 'Access-Control-Allow-Origin'" Error

I have deployed my website for some time and it worked well. But today I find it not loading with an “Access to fetch at ‘https://market-assets.fra1.cdn.digitaloceanspaces.com/market-assets/hdris/potsdamer-platz/potsdamer_platz_1k.hdr’ from origin https://lkhovo.me has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.” Error.

I asked gpt and edited the etc/nginx/site-available/digitalocean file. edited the server section to add the following lines:

location / {
add_header Access-Control-Allow-Origin https://lkhovo.me; 
add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
add_header Access-Control-Allow-Headers "DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range"; 
add_header Access-Control-Expose-Headers "Content-Length,Content-Range"; 
}

but still not working

What should I do?