dashicons/svg-min/warning.svg

<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><rect x="0" fill="none" width="20" height="20"/><g><path d="M10 2c4.42 0 8 3.58 8 8s-3.58 8-8 8-8-3.58-8-8 3.58-8 8-8zm1.13 9.38l.35-6.46H8.52l.35 6.46h2.26zm-.09 3.36c.24-.23.37-.55.37-.96 0-.42-.12-.74-.36-.97s-.59-.35-1.06-.35-.82.12-1.07.35-.37.55-.37.97c0 .41.13.73.38.96.26.23.61.34 1.06.34s.8-.11 1.05-.34z"/></g></svg>