Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/feb83756-59b2-4f57-8152-08617c0813a8/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-81868334-f200-47c1-bb60-024568954366",
      "cw-4a0d9991-efa4-4f07-9977-ac915fee0291"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d2bdd172-1cef-4038-9a33-61f06aae20e8",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/feb83756-59b2-4f57-8152-08617c0813a8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4a0d9991-efa4-4f07-9977-ac915fee0291",
    "thumbnailNavigationPosition": "far-bottom"
  }
}