Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v68yn1e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2e4165d2-73d2-440f-a47c-08b803a83198",
      "cw-45ee0b49-287e-4ef2-aa87-12ae38949ece"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-563c8fbb-e0f3-45e6-87de-83b2eb31050c",
    "manifestId": "https://dam.iuav.it/iuav/containers/v68yn1e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-45ee0b49-287e-4ef2-aa87-12ae38949ece"
  }
}