Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZnkqDbv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2966335a-70be-4094-8513-1582b7c49165",
      "cw-dc8500dd-7a85-47fc-9e4c-e3dd893a3ab1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9d299c3f-3c1f-41cd-9938-0bf4eaaf61e0",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZnkqDbv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-dc8500dd-7a85-47fc-9e4c-e3dd893a3ab1"
  }
}