[IntelliJ] null pointer exception

tomcat 설정 후 10초마다 아래의 에러가 로그에 찍힙니다. Nov 22, 2014 9:38:35 AM org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor processChildren SEVERE: Exception invoking periodic operation: java.lang.NullPointerException at org.apache.catalina.startup.HostConfig.filterAppPaths(HostConfig.java:527) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1385) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) at java.lang.Thread.run(Thread.java:662) 당황스럽죠;;; 구글에서는 나오는데 국내포털에선 안나오네요. 한국엔 이런 문제를 격으신분이 없나봅니다. 문제는 tomcat의 server.xml 파일에

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