Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.archive.org/iiif/naeb-b112-f02-21/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e8f965d3-8c83-4983-a18f-53cdecc88c85",
      "cw-4b965022-f855-49a1-92e2-9607a9ae941a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-630ff927-23d5-4db9-b2ea-96a53ef568a4",
    "manifestId": "https://iiif.archive.org/iiif/naeb-b112-f02-21/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4b965022-f855-49a1-92e2-9607a9ae941a",
    "thumbnailNavigationPosition": "off",
    "loadedManifest": "https://iiif.archive.org/iiif/naeb-b112-f02-21/manifest.json",
    "view": "single",
    "canvasIndex": 0
  }
}