Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Pe1rD2Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-98f1451b-9c81-424f-87b0-801e7097e70d",
      "cw-8aed64d0-0741-467f-9d26-d63f4757314b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ecac3e95-ca8e-472d-93c3-526b959b9fc8",
    "manifestId": "https://dam.iuav.it/iuav/containers/Pe1rD2Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8aed64d0-0741-467f-9d26-d63f4757314b"
  }
}