{
  "graph": null,
  "err": {
    "errs": [
      {
        "range": "d2/testdata/d2compiler/TestCompile/grid_edge.d2,6:0:57-6:12:69",
        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:7:1: edge from grid diagram \"hey\" cannot enter itself"
      }
    ]
  }
}