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

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java.lang.NullPointerException:
at com.sun.tools.ws.processor.modeler.annotation.WebServiceAP.isSubtype(WebServiceAP.java:345)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceAP.isRemote(WebServiceAP.java:340)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceVisitor.isLegalType(WebServiceVisitor.java:745)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceVisitor.isLegalParameter(WebServiceVisitor.java:648)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceVisitor.isLegalMethod(WebServiceVisitor.java:615)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceVisitor.methodsAreLegal(WebServiceVisitor.java:573)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceVisitor.isLegalImplementation(WebServiceVisitor.java:491)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceVisitor.shouldProcessWebService(WebServiceVisitor.java:306)
at com.sun.tools.apt.mirror.declaration.ClassDeclarationImpl.accept(ClassDeclarationImpl.java:95)
at com.sun.tools.ws.processor.modeler.annotation.WebServiceAP.buildModel(WebServiceAP.java:311)
at com.sun.mirror.apt.AnnotationProcessors$CompositeAnnotationProcessor.process(AnnotationProcessors.java:60)
at com.sun.tools.apt.comp.Apt.main(Apt.java:454)
at com.sun.tools.apt.main.JavaCompiler.compile(JavaCompiler.java:258)
at com.sun.tools.apt.main.Main.compile(Main.java:1102)
at com.sun.tools.apt.main.Main.compile(Main.java:964)
at com.sun.tools.apt.Main.processing(Main.java:95)
at com.sun.tools.apt.Main.process(Main.java:85)
at com.sun.tools.apt.Main.process(Main.java:67)
at com.sun.tools.ws.wscompile.WsgenTool.buildModel(WsgenTool.java:161)
at com.sun.tools.ws.wscompile.WsgenTool.run(WsgenTool.java:89)
at com.sun.tools.ws.util.WSToolsObjectFactoryImpl.wsgen(WSToolsObjectFactoryImpl.java:47)
at com.sun.tools.ws.spi.WSToolsObjectFactory.wsgen(WSToolsObjectFactory.java:93)
at com.sun.enterprise.webservice.WsUtil.runWsGen(WsUtil.java:1812)
at com.sun.enterprise.webservice.WsUtil.genWSInfo(WsUtil.java:2110)
at com.sun.enterprise.deployment.backend.AppDeployerBase.loadDescriptors(AppDeployerBase.java:346)
at com.sun.enterprise.deployment.backend.AppDeployer.explodeArchive(AppDeployer.java:274)
at com.sun.enterprise.deployment.backend.AppDeployer.deploy(AppDeployer.java:188)
at com.sun.enterprise.deployment.backend.AppDeployer.doRequestFinish(AppDeployer.java:132)
at com.sun.enterprise.deployment.phasing.J2EECPhase.runPhase(J2EECPhase.java:174)
at com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:95)
at com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:892)
at com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy(PEDeploymentService.java:266)
at com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy(PEDeploymentService.java:761)
at com.sun.enterprise.management.deploy.DeployThread.deploy(DeployThread.java:174)
at com.sun.enterprise.management.deploy.DeployThread.run(DeployThread.java:210)

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