Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AOK7qOA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-aee3fcc7-6b0a-4207-8cd9-adad4677aa3f",
      "cw-514fc5e2-f78b-4f62-81fd-4af7e71e1014"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a5a378bb-599d-41aa-b510-efceab5ad4ab",
    "manifestId": "https://dam.iuav.it/iuav/containers/AOK7qOA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-514fc5e2-f78b-4f62-81fd-4af7e71e1014"
  }
}