Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eg88EoZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6fadaa5b-dc22-4d57-b943-74df0f68b474",
      "cw-e82671e8-82b0-458a-a9d9-a50c29204a8e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c3e62ba4-a4a8-4866-8c10-3589e92f8772",
    "manifestId": "https://dam.iuav.it/iuav/containers/eg88EoZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e82671e8-82b0-458a-a9d9-a50c29204a8e"
  }
}