Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/b1a4abfb-3a1f-4c18-a8f3-951e295e68a1/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6c63a9a5-0bfd-49e9-ae41-3e820d0fd856",
      "cw-4aae02b2-4e32-4e69-8d97-213846f31332"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-da13a1b2-82d0-4921-a3f6-fd0c3491836f",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/b1a4abfb-3a1f-4c18-a8f3-951e295e68a1/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4aae02b2-4e32-4e69-8d97-213846f31332",
    "thumbnailNavigationPosition": "far-bottom"
  }
}