Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Znkxywv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3db79516-a16e-4506-b663-77cdacc59ec4",
      "cw-c48b54dd-9439-4289-9bbd-82e83d4af360"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ee6fb4ed-db12-4306-abde-92f3a826835c",
    "manifestId": "https://dam.iuav.it/iuav/containers/Znkxywv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c48b54dd-9439-4289-9bbd-82e83d4af360"
  }
}