java.lang.NullPointerException: This exception has no message.

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at com.h3xstream.findsecbugs.crypto.BadHexadecimalConversionDetector.visitClassContext(
at edu.umd.cs.findbugs.DetectorToDetector2Adapter.visitClass(
at edu.umd.cs.findbugs.FindBugs2.analyzeApplication(
at edu.umd.cs.findbugs.FindBugs2.execute(
at edu.umd.cs.findbugs.FindBugs.runMain(
at edu.umd.cs.findbugs.FindBugs2.main(

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