Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Znkxywv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f3cb1192-3257-4d60-bfa8-ca98b21d40ed",
      "cw-5ab64e47-2be6-4328-acdd-2cd9447e7a54"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-196ffe6d-5fe8-472e-90f4-63bb989cb5cd",
    "manifestId": "https://dam.iuav.it/iuav/containers/Znkxywv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5ab64e47-2be6-4328-acdd-2cd9447e7a54"
  }
}