java.lang.IllegalArgumentException: object is not an instance of declaring class

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Thrown to indicate that a method has been passed an illegal or inappropriate argument. Check that you don't have more than one method existing with the same name.

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java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:205)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:164)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:129)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:96)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:654)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:612)
at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:533)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:417)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:316)
at org.apache.log4j.PropertyWatchdog.doOnChange(PropertyConfigurator.java:682)
at org.apache.log4j.helpers.FileWatchdog.checkAndConfigure(FileWatchdog.java:88)
at org.apache.log4j.helpers.FileWatchdog.(FileWatchdog.java:57)
at org.apache.log4j.PropertyWatchdog.(PropertyConfigurator.java:674)
at com.liferay.portal.events.InitAction.run(InitAction.java:147)
at com.liferay.portal.events.EventsProcessor._process(EventsProcessor.java:144)
at com.liferay.portal.util.InitUtil.init(InitUtil.java:38)
at com.liferay.portal.util.PropsUtil.(PropsUtil.java:23)
at com.liferay.portal.servlet.filters.layoutcache.LayoutCacheFilter.(LayoutCacheFilter.java:448)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:210)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:304)
at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:77)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3600)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4193)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)

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