Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Znk1b9v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4ac41a9b-d347-43ea-bcbd-aa11a4b09ff5",
      "cw-3fedd492-fc10-4cda-9fd3-ef957075f1b0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-14d82a69-d566-446b-aa4f-507a54bc48fc",
    "manifestId": "https://dam.iuav.it/iuav/containers/Znk1b9v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3fedd492-fc10-4cda-9fd3-ef957075f1b0"
  }
}