Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/be9WQmv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-645836a2-fede-4a95-8617-71e86a9cc4fa",
      "cw-da87f8c4-bd1b-42d0-9205-59ed417be927"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ff4e5ca3-1648-4298-b1bd-810956987c81",
    "manifestId": "https://dam.iuav.it/iuav/containers/be9WQmv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-da87f8c4-bd1b-42d0-9205-59ed417be927"
  }
}