Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABmzMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0f73547f-7548-464e-9c3b-b762ca4cce78",
      "cw-88a611f2-2121-44e0-9870-7ff175aced6f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6b6e3f54-9948-439a-8979-7b5a7e8c503b",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABmzMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-88a611f2-2121-44e0-9870-7ff175aced6f"
  }
}