I installed the Dart Sass and I am trying to put a background image:

html {
  background: url(images/background.svg) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
}

my assets images has this:

$ tree assets/images
assets/images
├── background.svg
└── cryptos
    ├── btc.svg
    ├── eth.svg
    └── ltc.svg

And when I run the phoenix server I am having this log error:

[info] GET /assets/images/background.svg
[debug] ** (Phoenix.Router.NoRouteError) no route found for GET /assets/images/background.svg (PoeticoinsWeb.Router)
    (poeticoins 0.1.0) lib/phoenix/router.ex:406: PoeticoinsWeb.Router.call/2
    (poeticoins 0.1.0) lib/poeticoins_web/endpoint.ex:1: PoeticoinsWeb.Endpoint.plug_builder_call/2
    (poeticoins 0.1.0) lib/plug/debugger.ex:136: PoeticoinsWeb.Endpoint."call (overridable 3)"/2
    (poeticoins 0.1.0) lib/poeticoins_web/endpoint.ex:1: PoeticoinsWeb.Endpoint.call/2
    (phoenix 1.6.6) lib/phoenix/endpoint/cowboy2_handler.ex:54: Phoenix.Endpoint.Cowboy2Handler.init/4
    (cowboy 2.9.0) /Users/romenigld/workspace/elixir/poeticoding/poeticoins/deps/cowboy/src/cowboy_handler.erl:37: :cowboy_handler.execute/2
    (cowboy 2.9.0) /Users/romenigld/workspace/elixir/poeticoding/poeticoins/deps/cowboy/src/cowboy_stream_h.erl:306: :cowboy_stream_h.execute/3
    (cowboy 2.9.0) /Users/romenigld/workspace/elixir/poeticoding/poeticoins/deps/cowboy/src/cowboy_stream_h.erl:295: :cowboy_stream_h.request_process/3
    (stdlib 3.16.1) proc_lib.erl:226: :proc_lib.init_p_do_apply/3

Compiled css/app.scss to ../priv/static/assets/app.css.
[debug] Live reload: priv/static/assets/app.css
[debug] Live reload: priv/static/assets/app.css

My project on Github