square-warning from coolicons in Line with regular corners. alert, exclamation, attention, caution, error, important, box, rectangle. Other styles and corners: @coolicons/<style>/<radius>/square-warning with line, duocolor, duotone, fill or bulk and sharp or round. Leave out regular, like @coolicons/fill/square-warning, and use @coolicons/square-warning for line with regular corners.
pnpm dlx shadcn@latest add "https://coolicons.cool/r/square-warning.json"