Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0j0OZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1c3a9069-164e-41d7-a55a-d23bc2e94a8b",
      "cw-47a416d7-5e20-4786-abcc-92ce1e487bce"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-60901419-1ad7-4fb1-b971-ec4fe27d2296",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0j0OZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-47a416d7-5e20-4786-abcc-92ce1e487bce"
  }
}