Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ArPjpGZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7f9e8f10-bb38-46e4-b6b9-24a5cc6b4978",
      "cw-8939b2df-aa3a-4857-b553-ecbed6a94e38"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b2272351-a5a1-4618-94ae-39d690c63a0b",
    "manifestId": "https://dam.iuav.it/iuav/containers/ArPjpGZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8939b2df-aa3a-4857-b553-ecbed6a94e38"
  }
}