Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPWDl2Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6d4fcc2d-51b8-4ab3-9743-ab2bb31ca25c",
      "cw-011766f3-6695-4060-aa2a-3da0b854de2f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-18296f75-cb49-4012-8892-b0b9203ae96c",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPWDl2Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-011766f3-6695-4060-aa2a-3da0b854de2f"
  }
}