Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://sandbox.zenodo.org/api/iiif/record:126692/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://sandbox.zenodo.org/api/iiif/record:126692/canvas/_46bfcebe-9d99-4dfd-afc9-d84f212395a6.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b0ec436f-7ed4-4b46-88c9-654fbfa7fba0",
      "cw-7dfb8739-1eef-4cb8-9346-fac2a2f4c9af"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-4585449c-c5d8-4735-995a-79e75f56cf7c",
    "manifestId": "https://sandbox.zenodo.org/api/iiif/record:126692/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7dfb8739-1eef-4cb8-9346-fac2a2f4c9af",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}