Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq0BQQe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-83ed72d6-7a0c-4595-bf3b-ae581e278240",
      "cw-a9a1b61a-ae01-4486-9af9-cbf27b3ad7f2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9fe4ff36-0396-4ad5-9ddd-5ff4d2874229",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq0BQQe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a9a1b61a-ae01-4486-9af9-cbf27b3ad7f2"
  }
}