PRQA Jenkins plugin 3.0.1 reports the following issue while unmarshalling report information:

ConversionException: Refusing to unmarshal chosenReportTypes for security reasons; see https://jenkins.io/redirect/class-filter/
---- Debugging information ----
class : java.util.EnumSet required-type : java.util.EnumSet converter-type : hudson.util.XStream2$BlacklistedTypesConverter path : /build/actions/net.praqma.jenkins.plugin.prqa.notifier.PRQABuildAction/publisher/chosenReportTypes line number : 141
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This problem seems to indicate the java.util.EnumSet is not being whitelisted in Jenkins.