Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eg8WW2Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-843b4db6-2d09-4b05-bad3-da14d59de5f7",
      "cw-0eac09a5-4e1a-4aa8-a296-29a5e8d39e85"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-17d9abdc-5fe3-4a86-89c4-4fa38aa77293",
    "manifestId": "https://dam.iuav.it/iuav/containers/eg8WW2Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0eac09a5-4e1a-4aa8-a296-29a5e8d39e85"
  }
}