Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLEpj0A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-524cc6cc-b776-4681-9362-b6663b8f9449",
      "cw-afe73f2a-135a-4fc7-aa8d-670bc738446a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a87206c5-409e-43e5-b8c2-5a917084f9e0",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLEpj0A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-afe73f2a-135a-4fc7-aa8d-670bc738446a"
  }
}