Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eWYkwjv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-226efac2-d325-4469-861e-34249d1406f1",
      "cw-9895401c-563d-459d-afe3-141b48af58fe"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fd913174-b003-4602-8ce2-503a661b3fc4",
    "manifestId": "https://dam.iuav.it/iuav/containers/eWYkwjv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9895401c-563d-459d-afe3-141b48af58fe"
  }
}