Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWD4QZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1156b67f-736e-48c7-9070-1e61fdb8fedd",
      "cw-197655e0-275e-45b2-a5d6-de4697b44337"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bfcdc871-2fb3-4127-9dd2-2c0e651d0e74",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWD4QZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-197655e0-275e-45b2-a5d6-de4697b44337"
  }
}