运行代码后出现警告

警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:MyFirstWebApp' did not find a matching property.

老师，您好！这个怎么解决啊，我看上网上勾什么publish module  ，勾了也还是有警告