Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78loRA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0cd67cc8-9ef8-4cc3-a2b1-4014db7daf41",
      "cw-94d4d75c-dc13-4c2b-9948-7e354316bac7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-82bcdebb-bc9a-458e-a0e3-02e8a840a2b7",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78loRA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-94d4d75c-dc13-4c2b-9948-7e354316bac7"
  }
}