Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/937b5f9c-00a1-4b80-8ee4-42af95c47328/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-07c7f94c-346d-4480-80a9-d1492d9c13d3",
      "cw-ed098dc9-0113-4731-b16e-d050fa0a46bd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c40af177-d5a1-4df5-b10a-12361854e027",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/937b5f9c-00a1-4b80-8ee4-42af95c47328/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ed098dc9-0113-4731-b16e-d050fa0a46bd",
    "thumbnailNavigationPosition": "far-bottom"
  }
}