Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvloGGZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9ca6a55d-73ba-4752-9ed2-8d410f146aac",
      "cw-89a2c404-7c4d-45ea-b99c-2be8527e4ff3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2ab8c7c7-0158-411c-9c8d-e96577e3265a",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvloGGZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-89a2c404-7c4d-45ea-b99c-2be8527e4ff3"
  }
}