Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Awq9YmZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9a4217d8-da79-40de-aa83-ea68d571fb82",
      "cw-e19e0dbf-5acb-405e-8acd-fc65ea22fe83"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5912d7d5-2ba6-44a1-ab87-142f523b925d",
    "manifestId": "https://dam.iuav.it/iuav/containers/Awq9YmZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e19e0dbf-5acb-405e-8acd-fc65ea22fe83"
  }
}