Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-girolamini.cultura.gov.it/girolamini/containers/750OvKb/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d0f0baf3-ddc7-4f4d-b13e-7124d6e24cf4",
      "cw-277cebc4-1317-4754-af65-16e32f6a9b31"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a3d6144d-19b0-4142-8972-29073d010df9",
    "manifestId": "https://dam-girolamini.cultura.gov.it/girolamini/containers/750OvKb/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-277cebc4-1317-4754-af65-16e32f6a9b31"
  }
}