Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:4248484/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:4248484/canvas/big_468681.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-85dcfbe2-89c1-4d75-bb4a-dfb873bc741d",
      "cw-991bd57c-4e82-47d6-98a6-b10a2adeb056"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-8081a7ae-cc99-4b63-913a-22fd58b67e48",
    "manifestId": "https://zenodo.org/api/iiif/record:4248484/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-991bd57c-4e82-47d6-98a6-b10a2adeb056",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}