Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:4520827/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:4520827/canvas/figure.png",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-754705cd-4bf4-43fe-a221-ba33f35c28c9",
      "cw-dfd0e270-3b74-403d-846b-83885ec05258"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-2c7fb955-44d5-4a88-a092-8ef742f6bf63",
    "manifestId": "https://zenodo.org/api/iiif/record:4520827/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-dfd0e270-3b74-403d-846b-83885ec05258",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}