Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/f5efdd96-54df-4bd7-8506-70d21283071c/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2716c23f-6d18-4e34-86bb-8d8d6ace28c2",
      "cw-e7c1a8a0-38aa-42e3-b397-eb533751b63c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cf752c59-57d0-48fc-83e7-f4ed10a5d2b0",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/f5efdd96-54df-4bd7-8506-70d21283071c/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e7c1a8a0-38aa-42e3-b397-eb533751b63c",
    "thumbnailNavigationPosition": "far-bottom"
  }
}