The module has not been deployed

i'm working on JEE application on netBeans with Tomcat. when adding "applicationContext.xml" , then build and run i have this error:

The module has not been deployed. See the server log for details. at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:238) at org.netbeans.modules.maven.j2ee.ExecutionChecker.performDeploy(ExecutionChecker.java:205) at org.netbeans.modules.maven.j2ee.ExecutionChecker.executionResult(ExecutionChecker.java:123) at org.netbeans.modules.maven.execute.MavenCommandLineExecutor.run(MavenCommandLineExecutor.java:235) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)