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_21.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-09452153-5ec9-426f-8dcb-eaa5c5e98095",
      "cw-4d2da927-8930-419f-89e4-d64646e33dd8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-193671f2-103b-47b3-8ccc-761ffc50668c",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4d2da927-8930-419f-89e4-d64646e33dd8",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}