Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLEjwQA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-43196048-6eda-4ff7-b097-7ba0cdd1a065",
      "cw-5f0460a7-392f-4710-ac1a-1b8321f48795"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1291b219-9fcb-4dad-b2ee-1dcd110e8873",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLEjwQA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5f0460a7-392f-4710-ac1a-1b8321f48795"
  }
}