Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://sandbox.zenodo.org/api/iiif/record:118352/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://sandbox.zenodo.org/api/iiif/record:118352/canvas/cat.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c7c4917f-0990-4ef5-86c9-aebd8fd8def9",
      "cw-6ea89a0f-0852-44fe-b9e1-5822fdb1d107"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-46a323cc-aded-4f03-a2cf-c88d26ea8a2b",
    "manifestId": "https://sandbox.zenodo.org/api/iiif/record:118352/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6ea89a0f-0852-44fe-b9e1-5822fdb1d107",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}