Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nv7930e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fa861456-3a72-4232-ae9e-c26dac84bff9",
      "cw-b1d80e31-7453-4fef-bc3d-45448abb3d26"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2187eb05-3f01-4074-b282-ac5939c2e650",
    "manifestId": "https://dam.iuav.it/iuav/containers/nv7930e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b1d80e31-7453-4fef-bc3d-45448abb3d26"
  }
}