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Creating a post in the admin panel showed no Content editor, and saving failed validation on the field the writer was never shown. The admin panel does not import field components. The server hands the client a path per field, and resolves it through the generated map at app/(payload)/admin/importMap.js. A richText field's path is @payloadcms/richtext-lexical/rsc#RscEntryLexicalField. The committed map held one entry, @payloadcms/next/rsc#CollectionCards, generated before the blog collections existed and never re-run. A path missing from the map is not an error the panel reports: the field simply does not render, while required is still enforced server-side on save. next build does not regenerate the map, so the stale copy shipped in the image and the editor was equally broken on staging and production. Regenerated with payload generate:importmap, which adds the lexical RSC field, cell and diff components, BlocksFeatureClient for the Callout block, and the default toolbar features. Two things stop it drifting again. There was no script to run, so package.json gets generate:importmap. And a test asserts the map carries an entry for each thing the config asks for, in the source-reading style of the other payload suites; against the old map all five fail. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DXnXQKnPpZBBP61fBQiFkq