Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/QvPDn2v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-48d1dc67-2504-46c0-be4f-20b30b015fae",
      "cw-cfe6f9a2-b24b-49ee-b2e3-ab1c803ce620"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c3f4f4c4-704f-4741-b409-0603c76ba011",
    "manifestId": "https://dam.iuav.it/iuav/containers/QvPDn2v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-cfe6f9a2-b24b-49ee-b2e3-ab1c803ce620"
  }
}