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_31.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3be89f88-e7fb-43d0-9a5e-2ee8d14dc30e",
      "cw-3fc3a30e-3e3b-4f46-8f16-5dabc9c0169d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-4aa0caea-21de-4ede-9bf8-5a48b1afece0",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3fc3a30e-3e3b-4f46-8f16-5dabc9c0169d",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}