Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Pe1Qoxe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-56ad33f3-5d79-4808-a0a6-21d2da071cee",
      "cw-18348921-50b2-4d85-a33b-fef24d037347"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-232b84e3-a882-4834-aefb-1ce052f4cbe0",
    "manifestId": "https://dam.iuav.it/iuav/containers/Pe1Qoxe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-18348921-50b2-4d85-a33b-fef24d037347"
  }
}