Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABakzv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-330416a5-e53f-4061-a84a-452f36088f1f",
      "cw-086bebb1-b94a-435e-8b8b-2519e000f105"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b270f5f6-8513-4a54-a3c6-9c7b09f2574a",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABakzv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-086bebb1-b94a-435e-8b8b-2519e000f105"
  }
}