java.lang.NullPointerException
        at com.jcraft.jsch.Buffer.putString(Buffer.java:59)
        at com.jcraft.jsch.UserAuthKeyboardInteractive.start(UserAuthKeyboardInteractive.java:185)
        at com.jcraft.jsch.Session.connect(Session.java:418)
        at com.jcraft.jsch.Session.connect(Session.java:149)
        at org.apache.maven.wagon.providers.ssh.jsch.AbstractJschWagon.openConnectionInternal(AbstractJschWagon.java:231)
        at org.apache.maven.wagon.AbstractWagon.openConnection(AbstractWagon.java:105)
        at org.apache.maven.wagon.AbstractWagon.connect(AbstractWagon.java:207)
        at org.apache.maven.wagon.AbstractWagon.connect(AbstractWagon.java:149)
        at org.apache.maven.artifact.manager.DefaultWagonManager.getRemoteFile(DefaultWagonManager.java:499)
        at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:424)
        at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:341)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:167)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:82)
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:552)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:233)
        at org.apache.maven.project.artifact.MavenMetadataSource.retrieve(MavenMetadataSource.java:132)
        at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:509)
        at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(DefaultArtifactCollector.java:132)
        at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(DefaultArtifactCollector.java:85)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:445)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildProjectWithDependencies(DefaultMavenProjectBuilder.java:404)
        at org.apache.maven.embedder.MavenEmbedder.readProjectWithDependencies_aroundBody0(MavenEmbedder.java:453)
        at org.apache.maven.embedder.MavenEmbedder.readProjectWithDependencies_aroundBody1$advice(MavenEmbedder.java:304)
        at org.apache.maven.embedder.MavenEmbedder.readProjectWithDependencies(MavenEmbedder.java:1)
        at org.netbeans.modules.maven.api.NbMavenProject$1.run(NbMavenProject.java:197)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1030)