Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.archive.org/iiif/naeb-b056-f01/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ac3bd5d9-03d0-49d4-9e42-9d87a5821ad3",
      "cw-32257b2f-3e86-4056-bada-f1eb3ec300e3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fcbb52b7-ada9-4dde-b3a3-49f4114a831e",
    "manifestId": "https://iiif.archive.org/iiif/naeb-b056-f01/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-32257b2f-3e86-4056-bada-f1eb3ec300e3",
    "thumbnailNavigationPosition": "off",
    "loadedManifest": "https://iiif.archive.org/iiif/naeb-b056-f01/manifest.json",
    "view": "single",
    "canvasIndex": 0
  }
}