Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JvaO35e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7abf4f3f-18e4-4f09-ad7f-881f6b2e551b",
      "cw-679df111-e4e6-426c-b6fa-ea7e4d430977"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-99e5f6a5-2f3c-4e92-a178-94e92c6bf501",
    "manifestId": "https://dam.iuav.it/iuav/containers/JvaO35e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-679df111-e4e6-426c-b6fa-ea7e4d430977"
  }
}