Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vRdY4je/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6a56215c-9d16-4753-9e9b-0695c79875ed",
      "cw-64cebed8-acb3-41ac-80b2-9cf4cfa05460"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fcaf4ad9-ce61-4060-9510-46dda5f7ed4b",
    "manifestId": "https://dam.iuav.it/iuav/containers/vRdY4je/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-64cebed8-acb3-41ac-80b2-9cf4cfa05460"
  }
}