Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/be90VmA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-35a1510a-aa30-4038-9f72-687a67db310e",
      "cw-f8d1d94b-223c-4be0-b86a-86c1323cda2b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-92d6e8a5-c7e0-46b7-9158-895dd6eb496a",
    "manifestId": "https://dam.iuav.it/iuav/containers/be90VmA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f8d1d94b-223c-4be0-b86a-86c1323cda2b"
  }
}