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_25.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-90c7a9b0-8ec4-491d-98c0-b8c62ede1985",
      "cw-e2697523-9659-4238-a813-58721e0a55ec"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-accabb55-b325-4dd3-b8d9-427c01cb12be",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e2697523-9659-4238-a813-58721e0a55ec",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}