Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/7AzdpkZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-379e4702-c0c4-4c58-955c-6e7365e3c0f6",
      "cw-a003f84e-7b24-460f-b652-467eaa201544"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2b3bc3c6-76dc-4985-8f1a-0029043a4479",
    "manifestId": "https://dam.iuav.it/iuav/containers/7AzdpkZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a003f84e-7b24-460f-b652-467eaa201544"
  }
}