Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB020DZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fc0c46a7-e716-4aa8-ac1a-c04b41803f79",
      "cw-659a7d4f-7b7a-4e92-ab2f-fc8c305e4728"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6b53d841-e758-4b57-a546-4d10ed0dc793",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB020DZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-659a7d4f-7b7a-4e92-ab2f-fc8c305e4728"
  }
}