Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq0DBje/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c2520f7b-31a7-4915-b56d-8917532e21da",
      "cw-261272e8-1345-4f39-89af-7e2ea9fcf377"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6947f536-6e6c-4608-9c69-fe0dcbcf7f29",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq0DBje/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-261272e8-1345-4f39-89af-7e2ea9fcf377"
  }
}