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java.lang.IllegalStateException: Detected both jcl-over-slf4j.jar AND slf4j-jcl.jar on the class path, preempting StackOverflowError. See also http://www.slf4j.org/codes.html#jclDelegationLoop for more details.	at org.slf4j.impl.JCLLoggerFactory.(JCLLoggerFactory.java:55)	at org.slf4j.impl.StaticLoggerBinder.(StaticLoggerBinder.java:73)	at org.slf4j.impl.StaticLoggerBinder.(StaticLoggerBinder.java:42)	at org.slf4j.LoggerFactory.bind(LoggerFactory.java:128)	at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:107)	at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:295)	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:269)	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:281)	at org.jasig.portal.shell.PortalShell.(PortalShell.java:51)