Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Pe18baA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-94c5cf8a-65b9-4cf6-bd55-6c464b10e8d8",
      "cw-325aa5d7-83a0-4c1c-b385-d385396f2496"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b2b81f54-9767-4f0f-a8e5-47ce8df9e9c9",
    "manifestId": "https://dam.iuav.it/iuav/containers/Pe18baA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-325aa5d7-83a0-4c1c-b385-d385396f2496"
  }
}