Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AMjprge/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2e1440ce-c7bd-418f-abc2-323f3e766479",
      "cw-e5ea0692-6bde-47f3-a2bf-82304b04eea3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-087a0ab9-b25a-45f1-9505-e30613385174",
    "manifestId": "https://dam.iuav.it/iuav/containers/AMjprge/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e5ea0692-6bde-47f3-a2bf-82304b04eea3"
  }
}