Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/zegPgwZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-466f9adf-7321-4e08-99e7-54f69fbbdf11",
      "cw-4f5fa37d-1630-4827-bbe7-aa6b0f8b4d51"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-31924a43-97a7-4980-bea1-c6c73e138692",
    "manifestId": "https://dam.iuav.it/iuav/containers/zegPgwZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4f5fa37d-1630-4827-bbe7-aa6b0f8b4d51"
  }
}