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

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java.lang.NullPointerException:
at org.jvnet.hudson.plugins.SSHBuildWrapper.executePreBuildScript(SSHBuildWrapper.java:72)
at org.jvnet.hudson.plugins.SSHBuildWrapper.setUp(SSHBuildWrapper.java:64)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:604)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:430)
at hudson.model.Run.run(Run.java:1376)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:465)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:146)

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