Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vQn1woA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-09f927a7-334d-475a-ae06-70227bc7d2a7",
      "cw-9a75889f-927c-45b3-8266-2403a4648ced"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-29a3b69b-313d-49b7-a627-2971b5b6b36b",
    "manifestId": "https://dam.iuav.it/iuav/containers/vQn1woA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9a75889f-927c-45b3-8266-2403a4648ced"
  }
}