Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AVWz25e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a4f4ad35-5303-49b2-8f88-a3eb83fdc4f5",
      "cw-ffe208bb-4477-4d90-9c2c-d7eaaa5b46e6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3f67bde2-013b-4944-989f-26fd452ff156",
    "manifestId": "https://dam.iuav.it/iuav/containers/AVWz25e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ffe208bb-4477-4d90-9c2c-d7eaaa5b46e6"
  }
}