Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/3ZpYgMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0da82b4b-3437-45b0-94d9-349394181e60",
      "cw-abec3d5f-6075-4da7-a5ed-6f100d1d1feb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-158a8617-b069-49df-b849-30e86ebd2963",
    "manifestId": "https://dam.iuav.it/iuav/containers/3ZpYgMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-abec3d5f-6075-4da7-a5ed-6f100d1d1feb"
  }
}