Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Awq0QyZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f85d2cc7-d276-4c17-b06e-b69225d4c6be",
      "cw-ba6b02ee-e24f-4873-999b-005231ce0274"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e1b6d462-256c-46d9-8e9e-54eac9df2b05",
    "manifestId": "https://dam.iuav.it/iuav/containers/Awq0QyZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ba6b02ee-e24f-4873-999b-005231ce0274"
  }
}