Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78DdNA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9e209e57-8578-4621-abca-19c4e1426d84",
      "cw-897bd12f-da28-4410-bfbc-e413918a1283"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-49758f57-be74-4b1c-be93-346fc8c6608b",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78DdNA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-897bd12f-da28-4410-bfbc-e413918a1283"
  }
}