Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/voYY75e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a46f41ea-b04c-4a77-8e16-c918c013917a",
      "cw-d958282c-1537-4a0f-bc2d-188c99f0fad4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3fa74618-34b6-417f-a7f5-77a4223fcdb7",
    "manifestId": "https://dam.iuav.it/iuav/containers/voYY75e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d958282c-1537-4a0f-bc2d-188c99f0fad4"
  }
}