Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JZq69Lv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d7984cef-eb6c-4610-a11b-816915adae74",
      "cw-2ff0b296-b230-4179-9d3b-6ee75e91b844"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3160cfb5-087c-42d6-b2c2-9dfbf38c22e1",
    "manifestId": "https://dam.iuav.it/iuav/containers/JZq69Lv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2ff0b296-b230-4179-9d3b-6ee75e91b844"
  }
}