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_52.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ab6d1a2a-6c0f-4a2a-adbd-ac7da8a3cbaa",
      "cw-3841a1d6-9892-4aa4-bdaf-99251e949f23"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-2f65e4ec-0a36-4e3d-bd5f-d5530770cfc4",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3841a1d6-9892-4aa4-bdaf-99251e949f23",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}