Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:2620678/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:2620678/canvas/big_276832.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cebef6b5-893e-4679-8697-9d73ffa74f6b",
      "cw-88edca8a-9e67-4b85-9aa7-679306b1a8f4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-d56214f3-8511-4808-80b9-5e606be43e37",
    "manifestId": "https://zenodo.org/api/iiif/record:2620678/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-88edca8a-9e67-4b85-9aa7-679306b1a8f4",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}