Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZbQOO5e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8d7d9ff7-7072-4dab-865a-c2ac937642d2",
      "cw-f2c2adf5-d286-4c9c-921b-f4c75268d312"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-85adaa54-b050-42b9-893e-774487af9448",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZbQOO5e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f2c2adf5-d286-4c9c-921b-f4c75268d312"
  }
}