Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABOp9e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9e958eb4-cbde-40af-812a-369663de1131",
      "cw-1de9fad4-907f-493e-884e-c3bdf0cd5e61"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a05951b0-4278-4b4e-8e82-e348b9113b9f",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABOp9e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1de9fad4-907f-493e-884e-c3bdf0cd5e61"
  }
}