Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArOqOe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-da90279e-8540-4cc1-93c6-d216972e3b61",
      "cw-361ee195-15f1-4482-84fb-fc0ebedbd882"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1913cdd4-bcd8-4595-8a62-5a79cedc93e8",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArOqOe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-361ee195-15f1-4482-84fb-fc0ebedbd882"
  }
}