Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjERY5e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3f485fe8-9f81-4f1b-bb5e-8d93e7123fe6",
      "cw-5ae9732f-93ed-428c-99a8-209b5203942d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-261af9f6-3c1f-409b-b99a-c7c02ae2c838",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjERY5e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5ae9732f-93ed-428c-99a8-209b5203942d"
  }
}