Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:6399544/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:6399544/canvas/figure.png",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-efd2a62b-cbc2-4b6a-8a93-ad8175841e52",
      "cw-28e15c0f-a87a-457a-9f2a-e220ae718268"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-c9678018-7a17-4943-8286-0a6bab9d4e98",
    "manifestId": "https://zenodo.org/api/iiif/record:6399544/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-28e15c0f-a87a-457a-9f2a-e220ae718268",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}