A DESCRIPTION OF THE PROBLEM :
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/viz/gl/DisplayManager.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/stochastic/DistributionFunction.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/DoubleReference.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/stochastic/processes/DriftCoeffecientFunction.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/dynamical/systems/DynamicalSystem.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/theoretical/physics/forces/ElectromagneticForce.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/stochastic/processes/EmpiricalProcess.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/functions/complex/EntireFunction.html...
Generating /home/crow/git/arb4j/target/site/apidocs/arb4j/arb/biology/Enzyme.html...
error: An internal exception has occurred.
        (java.lang.IllegalStateException: ERRONEOUS)
Please file a bug against the javadoc tool via the Java bug reporting page
(http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com)
for duplicates. Include error messages and the following diagnostic in your report. Thank you.
java.lang.IllegalStateException: ERRONEOUS
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.seeTagToContent(HtmlDocletWriter.java:1019)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.TagletWriterImpl.seeTagOutput(TagletWriterImpl.java:318)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.taglets.SeeTaglet.getAllBlockTagOutput(SeeTaglet.java:82)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.taglets.TagletWriter.getBlockTagOutput(TagletWriter.java:288)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.getBlockTagOutput(HtmlDocletWriter.java:365)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.getBlockTagOutput(HtmlDocletWriter.java:351)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.addTagsInfo(HtmlDocletWriter.java:337)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassWriterImpl.addClassTagInfo(ClassWriterImpl.java:224)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.buildClassTagInfo(ClassBuilder.java:316)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.buildClassInfo(ClassBuilder.java:185)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.buildClassDoc(ClassBuilder.java:147)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.build(ClassBuilder.java:113)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:388)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:286)
        at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:199)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:212)
        at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.run(AbstractDoclet.java:115)
        at jdk.javadoc/jdk.javadoc.doclet.StandardDoclet.run(StandardDoclet.java:103)
        at jdk.javadoc/jdk.javadoc.internal.tool.Start.parseAndExecute(Start.java:556)
        at jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:393)
        at jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:342)
        at jdk.javadoc/jdk.javadoc.internal.tool.Main.execute(Main.java:63)
        at jdk.javadoc/jdk.javadoc.internal.tool.Main.main(Main.java:52)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
check out https://github.com/crowlogic/arb4j then try building the javadocs with "mvn javadoc:javadoc"


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Complete Javadocs
ACTUAL -
incomplete Javadocs , at least arb.Metric's page is missing. it terminates early after it throws the exception