Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:973074/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:973074/canvas/big_69550.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bdb6ae64-a453-4162-974d-870de0326ed2",
      "cw-835c1f75-59dc-418a-9cbb-ea2a9f1f421d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-00a0452f-7d25-43f2-abe8-687592fc4a59",
    "manifestId": "https://zenodo.org/api/iiif/record:973074/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-835c1f75-59dc-418a-9cbb-ea2a9f1f421d",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}