Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vRzwNv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4b50c6ad-b913-4c2f-bf05-b5549f5c91e6",
      "cw-92538a66-de37-4486-b5d2-06f3eb945326"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-71971e1e-a4e3-4645-86a7-23c26c78c60f",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vRzwNv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-92538a66-de37-4486-b5d2-06f3eb945326"
  }
}