Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBjVxe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-67d5216f-eed0-488a-bfa3-9d1ea95892dd",
      "cw-5d5f1dcc-01b2-4b8f-85e7-b1f28509e215"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1178ba1a-d54e-4aaf-bc48-077846de7674",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBjVxe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d5f1dcc-01b2-4b8f-85e7-b1f28509e215"
  }
}