Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.archive.org/iiif/naeb-b110-f08-21/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9f69f8ce-1d4f-4d80-8093-05916e906227",
      "cw-863b7caa-447e-4aef-8bcf-357c47ae2354"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-40c488a7-0488-4fe8-9889-2378eb0e1f3f",
    "manifestId": "https://iiif.archive.org/iiif/naeb-b110-f08-21/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-863b7caa-447e-4aef-8bcf-357c47ae2354",
    "thumbnailNavigationPosition": "off",
    "loadedManifest": "https://iiif.archive.org/iiif/naeb-b110-f08-21/manifest.json",
    "view": "single",
    "canvasIndex": 0
  }
}