Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AVWqb2e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e2f935cd-cfb1-487e-9358-a05c299e0e46",
      "cw-8a505b1b-eded-418f-a1df-ff4029246693"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8b46ba79-c9b0-4fb2-b7a1-f79802c4bf3c",
    "manifestId": "https://dam.iuav.it/iuav/containers/AVWqb2e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8a505b1b-eded-418f-a1df-ff4029246693"
  }
}