I use an svg favicon in my application.
My application was generated with the command: mix phx.new .

I added a favicon.svg file to assets/static.

In the layout file it is referenced as <link rel="icon" href="<%= Routes.static_path(@conn, "/favicon.svg") %>" />.

In dev mode this works. But when i run phoenix in prod mode the favicon is not served.

To build the assets i executed:

npm run deploy --prefix ./assets
mix phx.digest

This runs without any error and produces the following output:

ls priv/static/
cache_manifest.json                              favicon.svg     js                                              robots.txt
favicon-f518d411df681dc1e8258eb14b218a97.svg     favicon.svg.gz  robots-067185ba27a5d9139b10a759679045bf.txt     robots.txt.gz
favicon-f518d411df681dc1e8258eb14b218a97.svg.gz  images          robots-067185ba27a5d9139b10a759679045bf.txt.gz

In my browser devtools i can see that the favicon should be available here: <link rel="icon" href="/favicon-f518d411df681dc1e8258eb14b218a97.svg?vsn=d">.

But if i call this url nothing is returned.

/favicon.svg works though.

Here a part of endpoint.ex

  plug Plug.Static,
    at: "/",
    from: :typeracer,
    gzip: false,
    only: ~w(css fonts images js favicon.svg robots.txt

Does anyone know how i can make the favicon appear?