Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:2851973/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:2851973/canvas/BR0000012258833.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d8537eba-1979-4a4f-a67f-55a51863f495",
      "cw-1460c700-955f-45ad-bf4e-f92603d9d70b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-ca5447ac-4576-4231-a211-811d2b15d596",
    "manifestId": "https://zenodo.org/api/iiif/record:2851973/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1460c700-955f-45ad-bf4e-f92603d9d70b",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}