Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZbQdkRe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8122999c-d1f2-447f-82d3-0367a3a42a06",
      "cw-ae6ff898-7827-4be9-b5f4-80593ce50440"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-747e3758-f0f6-4987-94d6-3c548ec7919e",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZbQdkRe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ae6ff898-7827-4be9-b5f4-80593ce50440"
  }
}