Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:974051/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:974051/canvas/big_96554.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5266d7b8-f4f5-4da9-9f31-5cb0ddc6ccae",
      "cw-f768e5ea-af0a-4f54-b488-75da87528b3f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-59e61b7f-fa46-4924-a7ba-4ee1f6aefd66",
    "manifestId": "https://zenodo.org/api/iiif/record:974051/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f768e5ea-af0a-4f54-b488-75da87528b3f",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}