Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/desplaines/iiif/18816147-2d7c-4794-8c9b-b2e23468b49b/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2a010764-552b-42b7-809e-10e8522067a8",
      "cw-ef580620-26ee-4d0e-b370-89a40bb801d1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7d7770d4-0ba6-4f7e-be33-095363b2f9a3",
    "manifestId": "https://iiif.quartexcollections.com/desplaines/iiif/18816147-2d7c-4794-8c9b-b2e23468b49b/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ef580620-26ee-4d0e-b370-89a40bb801d1",
    "thumbnailNavigationPosition": "far-bottom"
  }
}