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java.lang.NullPointerException: 	at weblogic.ejb20.deployer.SessionBeanInfoImpl.assignDefaultTXAttributesIfNecessary(SessionBeanInfoImpl.java:291)	at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.initializeTransactionAttribute(MBeanDeploymentInfoImpl.java:807)	at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.(MBeanDeploymentInfoImpl.java:240)	at weblogic.ejb20.ejbc.EJBCompiler.setupEJB(EJBCompiler.java:155)	at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:415)	at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:387)	at weblogic.appc.compileEJB(appc.java:802)	at weblogic.appc.compileModules(appc.java:621)	at weblogic.appc.compileEAR(appc.java:733)	at weblogic.appc.compileInput(appc.java:458)	at weblogic.appc.runBody(appc.java:184)	at weblogic.utils.compiler.Tool.run(Tool.java:146)	at weblogic.utils.compiler.Tool.run(Tool.java:103)	at weblogic.appc.main(appc.java:1028)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)	at weblogic.ant.taskdefs.j2ee.CompilerTask.invokeMain(CompilerTask.java:278)	at weblogic.ant.taskdefs.j2ee.Appc.execute(Appc.java:179)	at org.apache.tools.ant.Task.perform(Task.java:341)	at org.apache.tools.ant.Target.execute(Target.java:309)	at org.apache.tools.ant.Target.performTasks(Target.java:336)	at org.apache.tools.ant.Project.executeTarget(Project.java:1339)	at org.apache.tools.ant.Project.executeTargets(Project.java:1255)	at org.apache.tools.ant.Main.runBuild(Main.java:609)	at org.apache.tools.ant.Main.start(Main.java:196)	at org.apache.tools.ant.Main.main(Main.java:235)	at weblogic.ejb20.ejbc.EJBCompiler.setupEJB(EJBCompiler.java:164)	at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:415)	at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:387)	at weblogic.appc.compileEJB(appc.java:802)	at weblogic.appc.compileModules(appc.java:621)	at weblogic.appc.compileEAR(appc.java:733)	at weblogic.appc.compileInput(appc.java:458)	at weblogic.appc.runBody(appc.java:184)	at weblogic.utils.compiler.Tool.run(Tool.java:146)	at weblogic.utils.compiler.Tool.run(Tool.java:103)	at weblogic.appc.main(appc.java:1028)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)	at weblogic.ant.taskdefs.j2ee.CompilerTask.invokeMain(CompilerTask.java:278)	at weblogic.ant.taskdefs.j2ee.Appc.execute(Appc.java:179)	at org.apache.tools.ant.Task.perform(Task.java:341)	at org.apache.tools.ant.Target.execute(Target.java:309)	at org.apache.tools.ant.Target.performTasks(Target.java:336)	at org.apache.tools.ant.Project.executeTarget(Project.java:1339)	at org.apache.tools.ant.Project.executeTargets(Project.java:1255)	at org.apache.tools.ant.Main.runBuild(Main.java:609)	at org.apache.tools.ant.Main.start(Main.java:196)	at org.apache.tools.ant.Main.main(Main.java:235)