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-63476fd6-ce68-4a37-bc5a-3c757528b3d0",
      "cw-7ba2a78b-49a2-41cc-879f-9fc8f898b730"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-7be061c1-2eba-422c-bbe5-50a77b35a3ae",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7ba2a78b-49a2-41cc-879f-9fc8f898b730",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}