Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZYzgGYv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-64d819c9-b52c-4b28-80a6-34e2d39e4723",
      "cw-c1f53e0a-fc4a-41cd-a383-b7315886333d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-aa7dd4a1-0e5d-4630-97bb-ec7890485949",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZYzgGYv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c1f53e0a-fc4a-41cd-a383-b7315886333d"
  }
}