Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://sandbox.zenodo.org/api/iiif/record:127486/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://sandbox.zenodo.org/api/iiif/record:127486/canvas/cat.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-004c40d0-8863-4e70-97bb-1cfaf5ea0903",
      "cw-6ccb5d80-f366-4cb6-b08a-871309bf6a32"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-e16b1006-bd2c-40b3-baba-baaf7f756c87",
    "manifestId": "https://sandbox.zenodo.org/api/iiif/record:127486/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6ccb5d80-f366-4cb6-b08a-871309bf6a32",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}