SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
{
"manifest": {
"error": "SyntaxError: Unexpected token '<', \"<!DOCTYPE \"... is not valid JSON",
"id": "/api/digital_items/80135/2/manifest.json/",
"isFetching": false
},
"window": {
"collectionIndex": 0,
"companionAreaOpen": true,
"companionWindowIds": [
"cw-b0714008-9551-48e7-b54a-9985e21dc6b7",
"cw-f5970576-5fbf-4bfd-ad75-1216dc347d64"
],
"draggingEnabled": true,
"highlightAllAnnotations": false,
"id": "window-6a85dd19-f14f-4fc0-ba27-53cbf7f468fd",
"manifestId": "/api/digital_items/80135/2/manifest.json/",
"maximized": false,
"rangeId": null,
"rotation": null,
"selectedAnnotations": {},
"sideBarOpen": false,
"sideBarPanel": "annotations",
"thumbnailNavigationId": "cw-f5970576-5fbf-4bfd-ad75-1216dc347d64",
"thumbnailNavigationPosition": "off",
"loadedManifest": "/api/digital_items/80135/2/manifest.json/",
"canvasIndex": 0
}
}