Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vlEX01A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4ef0b3a7-fee7-4c7f-85dc-ceef3a0516c5",
      "cw-dc024d98-c1ef-4a56-a69c-b13b444b8107"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3c67fa9a-b21d-4d4e-8f1f-79f5bdf8b99e",
    "manifestId": "https://dam.iuav.it/iuav/containers/vlEX01A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-dc024d98-c1ef-4a56-a69c-b13b444b8107"
  }
}