Unclear how to reference icon for admonition

[valhuber]

@squidfunk -- Love your product. Using it here.

Working from admonitions, I created the structure below. The icon reference is bad - comes up blank.. can you help?

The mkdocs.yml files is at same level as api_logic_server_cli..

[squidfunk]

As stated in our documentation, if you add custom admonition icons this way, you need to reference the entire SVG source in the url(...) function. This is necessary so Material for MkDocs can change the fill color of SVGs (e.g. for dark mode). Excerpt:

:root {
  --md-admonition-icon--pied-piper: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512">...</svg>')
}