Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eg8nKwZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8566964f-dc59-4872-a9c5-c62848e89fc4",
      "cw-38c1a3ff-4240-491f-be60-e2e8264be9c1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bfb74f81-8762-410f-b84f-b40105bd31c8",
    "manifestId": "https://dam.iuav.it/iuav/containers/eg8nKwZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-38c1a3ff-4240-491f-be60-e2e8264be9c1"
  }
}