'duplicate extension "woff", content type: "font/woff2", previous content type: "font/woff" in /etc/nginx/mime.types

After the latest Nginx update (currently nginx/1.21.6), the following warning started to appear when I do a nginx -t:

nginx: [warn] duplicate extension "woff", content type: "font/woff2", previous content type: "font/woff" in /etc/nginx/mime.types:29

The same issue is happening on all my servers, with Ubuntu 18.04 or 20.04 + latest nginx mainline

I never edited the mime.types files, which has the following:

types {
    [...]
    font/woff                             woff;
    font/woff2                            woff;
}

From what I understand it doesn't like these two lines having the same value, but which one should I delete?

nginx

Solution 1:^[1]

I found out where the issue was, If you have the same issue you're probably using the ppa:ondrej/nginx-mainline repository, and you have:

font/woff                             woff;
font/woff2                            woff;

Instead of:

font/woff                                        woff;
font/woff2                                       woff2;

See the file on the nginx/nginx master branch for reference.

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Solution	Source
Solution 1	the_nuts