Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pZ8R8gA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-17ea3515-f022-44ac-9492-dab93ce67bc1",
      "cw-2fd4f347-8400-45c1-808c-d00e4459a831"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-62550b15-7f22-4fc6-99e9-d56033f38198",
    "manifestId": "https://dam.iuav.it/iuav/containers/pZ8R8gA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2fd4f347-8400-45c1-808c-d00e4459a831"
  }
}