Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLEM9yA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-eda4aee9-6306-4160-a515-4eb9b4afcda2",
      "cw-e2321d3b-b9b7-4143-a209-2c896a553fce"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ba2f6c8b-5a40-4962-a0fb-5cc2ed13fa54",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLEM9yA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e2321d3b-b9b7-4143-a209-2c896a553fce"
  }
}