{
  "graph": null,
  "err": {
    "ioerr": null,
    "errs": [
      {
        "range": "d2/testdata/d2compiler/TestCompile/link-board-not-board.d2,1:8:12-1:18:22",
        "errmsg": "d2/testdata/d2compiler/TestCompile/link-board-not-board.d2:2:9: internal link key \"layers.x.y\" is not a top-level board"
      }
    ]
  }
}