Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ArP1V0Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fc549acf-3d23-4be3-afbd-4c7eeecdd301",
      "cw-9eef5fdc-5d9f-46e0-b414-47fdccab9a99"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f5c5495e-6995-40fb-b88f-e6d0b27af593",
    "manifestId": "https://dam.iuav.it/iuav/containers/ArP1V0Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9eef5fdc-5d9f-46e0-b414-47fdccab9a99"
  }
}