log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not assignable to a "org.apache.log4j.Appender" variable. log4j:ERROR The class "org.apache.log4j.Appender" was loaded by log4j:ERROR [org.apache.catalina.loader.StandardClassLoader@68da4b71] whereas object of type log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by [WebappClassLoader delegate: false repositories: /WEB-INF/class..