Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.archive.org/iiif/naeb-b112-f02-12/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-63d28bd1-3a41-416b-9a82-a1267620b367",
      "cw-d6782357-0a24-40c3-a477-ddaae58a79a7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-091bd386-eb1e-46d9-b975-1f39ba3c5a24",
    "manifestId": "https://iiif.archive.org/iiif/naeb-b112-f02-12/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d6782357-0a24-40c3-a477-ddaae58a79a7",
    "thumbnailNavigationPosition": "off",
    "loadedManifest": "https://iiif.archive.org/iiif/naeb-b112-f02-12/manifest.json",
    "view": "single",
    "canvasIndex": 0
  }
}