Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvlQxdA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fb4871ba-a3df-4a87-9cbf-2465117473d0",
      "cw-ca66649d-d16f-4c6f-9f5e-5cd0cea9485a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9e8307cf-2d74-4a1c-b50f-27b25fc689ee",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvlQxdA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ca66649d-d16f-4c6f-9f5e-5cd0cea9485a"
  }
}