turbopack.rules only applies to turbopack. When building with TURBOPACK=0 (required for Payload CMS), webpack has no SVG rule. Icons.UnitedKingdom returns an object → React #130. Adding a webpack config rule for @svgr/webpack fixes both bundler paths. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>