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java.lang.NullPointerException at hudson.matrix.MatrixProject.createTransientActions(MatrixProject.java:446) at hudson.model.AbstractProject.updateTransientActions(AbstractProject.java:748) at hudson.matrix.MatrixProject.updateTransientActions(MatrixProject.java:456) at hudson.model.AbstractProject.onLoad(AbstractProject.java:333) at hudson.matrix.MatrixProject.onLoad(MatrixProject.java:497) at hudson.model.Items.load(Items.java:322) at jenkins.model.Jenkins$17.run(Jenkins.java:2655) at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) at jenkins.model.Jenkins$7.runTask(Jenkins.java:905) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)