NPE in jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.importNamed(

java.lang.NullPointerException

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.importNamed(TypeEnter.java:489)

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.doImport(TypeEnter.java:415)

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.resolveImports(TypeEnter.java:352)

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.runPhase(TypeEnter.java:309)

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$Phase.doCompleteEnvs(TypeEnter.java:270)

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$Phase.completeEnvs(TypeEnter.java:245)

        at jdk.compiler/com.sun.tools.javac.comp.TypeEnter.complete(TypeEnter.java:195)

        at jdk.compiler/com.sun.tools.javac.code.Symbol.complete(Symbol.java:633)

        at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1294)

        at jdk.compiler/com.sun.tools.javac.comp.Enter.complete(Enter.java:569)

        at jdk.compiler/com.sun.tools.javac.comp.Enter.main(Enter.java:546)

        at jdk.javadoc/com.sun.tools.javadoc.main.JavadocEnter.main(JavadocEnter.java:77)

        at jdk.javadoc/com.sun.tools.javadoc.main.JavadocTool.getRootDocImpl(JavadocTool.java:221)

        at jdk.javadoc/com.sun.tools.javadoc.main.Start.parseAndExecute(Start.java:433)

        at jdk.javadoc/com.sun.tools.javadoc.main.Start.begin(Start.java:238)

        at jdk.javadoc/com.sun.tools.javadoc.main.Start.begin(Start.java:224)

        at jdk.javadoc/com.sun.tools.javadoc.Main.execute(Main.java:173)

        at com.bea.util.jam.internal.javadoc.JavadocRunner.run(JavadocRunner.java:143)