Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABOOye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3bf94656-8925-46f3-a8f1-890a856d9502",
      "cw-0f10fd51-f68f-4448-82c5-33f80a841210"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-764bbf3f-4064-46ef-8151-391d51d6a152",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABOOye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0f10fd51-f68f-4448-82c5-33f80a841210"
  }
}