Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://sandbox.zenodo.org/api/iiif/record:182252/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://sandbox.zenodo.org/api/iiif/record:182252/canvas/4692T500-3-02-5-letters-CL.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-accb0ea4-284c-4cd1-8c4b-f6748f6af67c",
      "cw-4021181a-9c55-42d8-87b3-1e635481b454"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-65f2c8d7-08cd-4f6f-819b-34db916b3bef",
    "manifestId": "https://sandbox.zenodo.org/api/iiif/record:182252/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4021181a-9c55-42d8-87b3-1e635481b454",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}