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-0b91f576-614c-4259-b2ef-5e94c4fa1abc",
      "cw-4ef88da7-8a11-40e6-b66e-c012755a9d2c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c00af6d1-fede-4818-8826-a0ec0ddbcf1d",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB020DZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4ef88da7-8a11-40e6-b66e-c012755a9d2c"
  }
}