Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXGLLZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9fe1e63a-34ab-44f5-9f12-966c2fb34568",
      "cw-d37a352d-dc3e-490e-b9db-f92a80c61bf9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-65a480c3-d42b-4a6e-92c8-20e937bd7383",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXGLLZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d37a352d-dc3e-490e-b9db-f92a80c61bf9"
  }
}