Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AMjprge/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4e3f5e0b-3105-4873-b63f-7c0acfc2af88",
      "cw-ee8f9c10-1f47-4e77-b87d-4ca1eac6e567"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e6f9310d-90c0-4e39-b576-723c009f750c",
    "manifestId": "https://dam.iuav.it/iuav/containers/AMjprge/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ee8f9c10-1f47-4e77-b87d-4ca1eac6e567"
  }
}