Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/A30DEpe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a0381554-1f11-4b0b-a28f-340d631ba0cd",
      "cw-59a7ffe5-2aec-43f9-8ad2-64df0427e425"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d03e17d2-ecac-4af5-8376-7420e8a275fa",
    "manifestId": "https://dam.iuav.it/iuav/containers/A30DEpe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-59a7ffe5-2aec-43f9-8ad2-64df0427e425"
  }
}