Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vRRPMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d7f054bc-5299-49ab-b402-a7e527f87443",
      "cw-70361fa2-205b-4a02-bd2f-5641075e2e22"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-56e4e385-0da8-4db4-b8f2-415cd2925766",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vRRPMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-70361fa2-205b-4a02-bd2f-5641075e2e22"
  }
}