Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/voYMnOe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2ae0e77f-1e63-44d3-b991-130668c98fcf",
      "cw-d0c5f0b6-55d4-451f-bde8-8cdb4bdc42aa"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9de5cef6-73f6-4ea2-9400-34f2fd330a17",
    "manifestId": "https://dam.iuav.it/iuav/containers/voYMnOe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d0c5f0b6-55d4-451f-bde8-8cdb4bdc42aa"
  }
}