SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
{
"manifest": {
"error": "SyntaxError: Unexpected token '<', \"<!DOCTYPE \"... is not valid JSON",
"id": "https://digital.libraries.psu.edu/iiif/info/maps1/26363/manifest.json",
"isFetching": false
},
"window": {
"collectionIndex": 0,
"companionAreaOpen": true,
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"cw-c2e9a873-8604-4e0b-9ee3-832c469d1f9d"
],
"draggingEnabled": true,
"highlightAllAnnotations": false,
"id": "window-0a986824-6ecb-4c4d-aaf3-e3e2c86bf3d3",
"manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/26363/manifest.json",
"maximized": false,
"rangeId": null,
"rotation": null,
"selectedAnnotations": {},
"sideBarOpen": false,
"sideBarPanel": "info",
"thumbnailNavigationId": "cw-c2e9a873-8604-4e0b-9ee3-832c469d1f9d"
}
}