Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABOzOe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-feba5c39-bdc0-4117-a2c6-7417ff6a64c3",
      "cw-59c4bb20-f06c-4236-b3e9-4e2ca9e4d192"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-68c735a5-8ec6-490c-b6a8-5cdb8faccdfb",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABOzOe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-59c4bb20-f06c-4236-b3e9-4e2ca9e4d192"
  }
}