Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eg8VRYZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-36902d64-6221-4dc5-9e61-f9b71dd736d8",
      "cw-fc921148-3455-48aa-98ac-fb1886adfef9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-014a28c1-20cd-4c15-af77-77d5b8878f46",
    "manifestId": "https://dam.iuav.it/iuav/containers/eg8VRYZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fc921148-3455-48aa-98ac-fb1886adfef9"
  }
}