Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:961255/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:961255/canvas/big_45020.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e1393858-f2b3-4468-9e34-abd54d14d185",
      "cw-1e42ab4e-7f4e-4660-8a5d-918fc2a12805"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-c1421c81-efc1-4af2-a71c-9c3b8c4ab9e3",
    "manifestId": "https://zenodo.org/api/iiif/record:961255/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1e42ab4e-7f4e-4660-8a5d-918fc2a12805",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}