Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:970449/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:970449/canvas/big_68955.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c7782217-9204-45e6-9d6a-bcc7f44d30b4",
      "cw-ee356de4-93a2-4aa9-972b-57f6182cd5b7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-01459f0b-5ef9-4624-949c-9e1c1406cf4c",
    "manifestId": "https://zenodo.org/api/iiif/record:970449/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ee356de4-93a2-4aa9-972b-57f6182cd5b7",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}