我正在运行springource工具套件2.9.1。在我检查了一个spring roo项目后，该项目没有认识到它是一个动态Web项目，当我尝试更新maven配置时，它会出现此错误
!MESSAGE An internal error occurred during: "Updating Maven Configuration".
!STACK 0
java.lang.NullPointerException
at com.springsource.sts.roo.ui.internal.maven.RooProjectConfigurator.doConfigure(RooProjectConfigurator.java:56)
at com.springsource.sts.maven.AbstractSpringProjectConfigurator.configure(AbstractSpringProjectConfigurator.java:36)
at org.eclipse.m2e.core.project.configurator.AbstractLifecycleMapping.configure(AbstractLifecycleMapping.java:72)
at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:302)
at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:277)
at org.eclipse.m2e.core.ui.internal.UpdateConfigurationJob.runInWorkspace(UpdateConfigurationJob.java:87)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
任何想法？