Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vlE4rBA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cb561497-e19b-4791-b2bf-624fe5ad0c2a",
      "cw-5cae01bf-1cc4-4dd8-b6bc-d7ac2e65dcc3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-887b01c0-ee3d-4dc8-b745-a0bd5a860a0e",
    "manifestId": "https://dam.iuav.it/iuav/containers/vlE4rBA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5cae01bf-1cc4-4dd8-b6bc-d7ac2e65dcc3"
  }
}