Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kkJkv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7b7cd73c-5e56-42e3-8fc0-ca7bb72d445d",
      "cw-b3ad88b1-6594-4289-959b-faeeff7146f9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-25822325-50e3-4d7e-897d-d58100f6eb67",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kkJkv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b3ad88b1-6594-4289-959b-faeeff7146f9"
  }
}