Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be53kMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-22f4a309-41e2-4b32-b32b-4dc6a6652b5a",
      "cw-556395ab-3241-440c-b6c6-2f1f38ec2e10"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d29daa2a-05bb-4c34-b721-d84047a302a3",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be53kMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-556395ab-3241-440c-b6c6-2f1f38ec2e10"
  }
}