I get the following error while deploying to Websphere. My servers logs are clean. I get the following error in Jenkins log. My artifact gets deployed on WAS successfully but Jenkins is not able to start the application and throws the following error:

Error deploying to IBM WebSphere Application Server: java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:504)
at java.lang.Integer.parseInt(Integer.java:527)
at org.jenkinsci.plugins.websphere_deployer.WebSphereDeployerPlugin.startArtifact(WebSphereDeployerPlugin.java:239)
at org.jenkinsci.plugins.websphere_deployer.WebSphereDeployerPlugin.perform(WebSphereDeployerPlugin.java:209)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:726)
at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.post2(MavenModuleSetBuild.java:1047)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:671)
at hudson.model.Run.execute(Run.java:1766)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:531)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:381)