Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vRjyVv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c0f4bd4e-c0f7-47a6-91c0-149676ee93fc",
      "cw-9505200f-8dc5-40cd-9e1f-fc32a38e298d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6f605592-9b3f-4613-b033-926f3a9f3380",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vRjyVv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9505200f-8dc5-40cd-9e1f-fc32a38e298d"
  }
}