Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vREbLZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-14193b0f-f7a8-4452-9595-516c63d9f0c4",
      "cw-95fe5ad9-6a6c-4d3c-b5fe-14abc442bfe7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f818d594-fefb-48dd-b3bb-2de36fc967bc",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vREbLZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-95fe5ad9-6a6c-4d3c-b5fe-14abc442bfe7"
  }
}