SonarQube failing to load active rules after update to 9.6.1

SonarQube Server / Community Build
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2

Hey there.

What happens if you yourself request the failing URL?

http://localhost/sonarqube/api/rules/search.protobuf?f=repo,name,severity,lang,internalKey,templateKey,params,actives,createdAt,updatedAt,deprecatedKeys&activation=true&qprofile=AXlmeEU62-1_UQX1oJnB&ps=500&p=1