X_DOC_FIX_UNSCANNED
Means
wiki/Error-Codes.md could not be read, or holds no Fix column
Typical cause
the page was moved or renamed, or its header row was edited so the column is no longer found by name. Reported rather than skipped: a check whose input has vanished must fail, or it is a false green
Fix
bun run scripts/doc-fixes.ts --json, then restore the page or its Fix header