I guess the Skyline API interprets the JSON query as {"query":"{ activeFindings( filter: {findingId: "vSphere-CVE-2020-3992-VMSA#202023"} limit: 200 ) { findings { findingId products affectedObjects...
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I guess the Skyline API interprets the JSON query as {"query":"{ activeFindings( filter: {findingId: "vSphere-CVE-2020-3992-VMSA#202023"} limit: 200 ) { findings { findingId products affectedObjects(start: 0, limit: 200) {sourceName objectName objectType version buildNumber solutionTags { type version } firstObserved} } totalRecords timeTaken}}"} and "{ activeFindings( filter: {findingId: " as the value of "query". Therefore the rest is invalid JSON. I believe this is a JSON parsing bug with the API.