Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78mEjA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b24731e6-7965-41f0-aa26-b339d0781ac0",
      "cw-ef6a7881-e187-4f30-ae32-49b6b0098699"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6cce5770-49e9-4574-bdc2-3de2c9f2a918",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78mEjA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ef6a7881-e187-4f30-ae32-49b6b0098699"
  }
}