Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:4729447/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:4729447/canvas/figure.png",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ad9103d4-3514-4862-86ae-0711885e5fea",
      "cw-dcbe71d8-2c13-455e-b531-3997301fa8a7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-c3c76ea9-09c1-4efc-958b-cec7fd93d672",
    "manifestId": "https://zenodo.org/api/iiif/record:4729447/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-dcbe71d8-2c13-455e-b531-3997301fa8a7",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}