Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50lO3A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1de61730-290a-4d0e-bcc4-bc7f36980cc8",
      "cw-8e1f8934-1f54-4973-9797-c2946aab5fd3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-42dfe4d9-b097-4075-8b2c-1e10104c9662",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50lO3A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8e1f8934-1f54-4973-9797-c2946aab5fd3"
  }
}