Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:239947/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:239947/canvas/figure.png",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4c06d422-f6aa-4a64-8f9c-242bde99ea1d",
      "cw-d42807cc-c7d5-4a5a-99c8-cfdc24c69f6e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-3597a6a6-e202-4158-a93c-5b019c3699c6",
    "manifestId": "https://zenodo.org/api/iiif/record:239947/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d42807cc-c7d5-4a5a-99c8-cfdc24c69f6e",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}