Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nv7P4yA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-381a153f-ae76-4884-887d-8cebbc9e4cec",
      "cw-74ac7697-1e86-4307-a28f-a847816e8030"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-60fdec13-db26-40fe-a55c-76e0ece440fa",
    "manifestId": "https://dam.iuav.it/iuav/containers/nv7P4yA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-74ac7697-1e86-4307-a28f-a847816e8030"
  }
}