Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dZYY3XZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5852e34e-bc09-4995-8045-ec7ca548ce38",
      "cw-24e74b28-adc4-4e19-a2cb-042046441194"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-11c53a5a-8d8e-490c-81b9-20f9e63092fd",
    "manifestId": "https://dam.iuav.it/iuav/containers/dZYY3XZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-24e74b28-adc4-4e19-a2cb-042046441194"
  }
}