Eclipse 应用程序引擎后端赢得'；t构建

我最近更新了EclipseGAE插件，现在我的移动应用程序后端无法构建，因为它没有配置为web应用程序。有人看到过这个问题吗？如果有，解决办法是什么？我想这是一个环境，但我还不知道在哪里

堆栈跟踪：

org.eclipse.core.runtime.CoreException: 'myProjectTitle' is not configured as a web application
    at com.google.gdt.eclipse.core.WebAppUtilities.verifyIsWebApp(WebAppUtilities.java:370)
    at com.google.appengine.eclipse.core.resources.GaeProject.getXmlFile(GaeProject.java:310)
    at com.google.appengine.eclipse.core.resources.GaeProject.getAppEngineWebXml(GaeProject.java:205)
    at com.google.appengine.eclipse.core.resources.GaeProject.getAppId(GaeProject.java:209)
    at com.google.gdt.eclipse.appengine.swarm.wizards.HandleGaeProjectChange.createSwarmServiceCreator(HandleGaeProjectChange.java:63)
    at com.google.gdt.eclipse.appengine.swarm.wizards.HandleGaeProjectChange.gaeProjectRebuilt(HandleGaeProjectChange.java:41)
    at com.google.appengine.eclipse.core.properties.ui.CloudEndpointsBuilder.build(CloudEndpointsBuilder.java:104)
    at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:733)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
    at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:299)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:302)
    at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:358)
    at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:381)
    at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
    at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

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我几乎不好意思这么说，但这是解决我问题的办法：

我从我的应用程序的构建路径中删除了谷歌应用程序引擎（我不记得把它放进去了），清理/重建了它，然后我转到错误日志并删除了错误。只需控制单击删除

拉带几圈，如果有人遇到这个问题，可能是eclipse错误或其他什么，但我不确定