Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:6523988/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:6523988/canvas/figure.png",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-651aefa5-c0e6-44d6-8178-baeb93a9c2ac",
      "cw-f3f561f6-0845-4eb6-af14-ab54cec444e7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-4b774884-b32f-4e20-82b8-85c3e28069e8",
    "manifestId": "https://zenodo.org/api/iiif/record:6523988/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f3f561f6-0845-4eb6-af14-ab54cec444e7",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}