Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Awqd42Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8f1519e3-0456-4e0b-a08e-371a61adfd18",
      "cw-b2dce4f0-b2ae-4489-b442-61fd59b6ce82"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-895cb06d-4337-49fa-b7de-f15c62b2375f",
    "manifestId": "https://dam.iuav.it/iuav/containers/Awqd42Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b2dce4f0-b2ae-4489-b442-61fd59b6ce82"
  }
}