Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:18620/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:18620/canvas/anthrome_61.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c3ce9f0f-f987-40c9-be3d-f0acd9239007",
      "cw-ba63711c-c612-4ae6-999d-db6d2fa6da9f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-78845adf-d5f8-442c-a7e1-308eeab46893",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ba63711c-c612-4ae6-999d-db6d2fa6da9f",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}