Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/6605/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fcf70b98-7163-4156-b644-f2fe6d849500",
      "cw-40fcc01c-c513-4270-9efb-58aca05dc4ca"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f8ca3bea-44fa-4089-8570-fd723ea8ad7d",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/6605/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-40fcc01c-c513-4270-9efb-58aca05dc4ca"
  }
}