Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78DdNA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3446ed64-87a6-4f23-8a78-5c9a9edb08ce",
      "cw-611c2620-f00d-455d-970e-1aaa03e052b2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-67e3f311-be5d-4a5a-9b2e-a4cf43e8ec6c",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78DdNA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-611c2620-f00d-455d-970e-1aaa03e052b2"
  }
}