Exception while debugging Java

Just launched the debugger

java.lang.NullPointerException
    at org.netbeans.lib.nbjavac.services.NBJavadocMemberEnter.visitVarDef(NBJavadocMemberEnter.java:97)
    at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:962)
    at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:172)
    at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1184)
    at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:962)
    at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:673)
    at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:749)
    at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:773)
    at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1350)
    at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:73)
    at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1026)
    at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:673)
    at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:749)
    at com.sun.tools.javac.comp.Attr.attribStatToTree(Attr.java:431)
    at com.sun.tools.javac.api.JavacTrees.attribStatToTree(JavacTrees.java:1017)
    at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:976)
    at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:835)
    at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:172)
    at org.netbeans.api.java.source.TreeUtilities.scopeFor(TreeUtilities.java:761)
    at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport$12.run(EditorContextSupport.java:1333)
    at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport$12.run(EditorContextSupport.java:1231)
    at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:501)
    at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586)
    at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:130)
    at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:114)
    at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:181)
    at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:178)
    at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
    at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
    at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
    at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
    at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:178)
    at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:81)
    at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:451)
    at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:422)
    at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport$14.run(EditorContextSupport.java:1479)
    at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport$14.run(EditorContextSupport.java:1471)
    at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport$ScanRunnable.run(EditorContextSupport.java:1461)
    at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
    at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
    at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)