Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vRz6Vv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-827111cd-f645-4552-93e9-593c216a767b",
      "cw-104fff0e-cf88-476f-a415-c89daa8abf2d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-baab5694-1bf5-4397-ad25-5cf3a9f578b7",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vRz6Vv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-104fff0e-cf88-476f-a415-c89daa8abf2d"
  }
}