Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be5NQXZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-66dbf7d8-93f4-4d8d-9b4a-0cd8c6eb9f6b",
      "cw-8c2c8d8e-b74e-4170-86b2-054a921d15e0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0c073a13-9ce6-404e-b43d-51d0fb8bab36",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be5NQXZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8c2c8d8e-b74e-4170-86b2-054a921d15e0"
  }
}