Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:18620/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:18620/canvas/anthrome_34.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
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      "cw-f9eefe7f-fe64-46a3-9256-eec75d1d6678"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-9d850b6d-74d3-4b3f-a71b-1a7554314a74",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f9eefe7f-fe64-46a3-9256-eec75d1d6678",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}