Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Rvoxx2A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b5640979-d554-42c1-b24d-c49a0b692bba",
      "cw-195e4c69-85ba-4662-b1b3-7e2f143d68e0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cd448157-d2da-4fce-bcf4-e85066861f37",
    "manifestId": "https://dam.iuav.it/iuav/containers/Rvoxx2A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-195e4c69-85ba-4662-b1b3-7e2f143d68e0"
  }
}