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java.lang.IllegalArgumentException: Bad level "WARN"	at java.util.logging.Level.parse(Level.java:336)	at org.apache.velocity.runtime.log.JdkLogChute.init(JdkLogChute.java:65)	at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:150)	at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:243)	at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:728)	at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:240)	at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:548)	at org.apache.velocity.runtime.RuntimeSingleton.init(RuntimeSingleton.java:241)	at org.apache.velocity.app.Velocity.init(Velocity.java:97)	at org.openmeetings.app.templates.VelocityLoader.(Unknown Source)	at org.openmeetings.app.templates.RegisterUserTemplate.(Unknown Source)	at org.openmeetings.app.templates.RegisterUserTemplate.getInstance(Unknown Source)	at org.openmeetings.app.data.user.Emailmanagement.sendMail(Unknown Source)	at org.openmeetings.app.data.user.Usermanagement.registerUserInit(Unknown Source)	at org.openmeetings.app.data.user.Usermanagement.registerUser(Unknown Source)	at org.openmeetings.app.remote.MainService.registerUserByObject(Unknown Source)	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.red5.server.service.ServiceInvoker.invoke(ServiceInvoker.java:201)	at org.red5.server.service.ServiceInvoker.invoke(ServiceInvoker.java:119)	at org.red5.server.net.rtmp.RTMPHandler.invokeCall(RTMPHandler.java:158)	at org.red5.server.net.rtmp.RTMPHandler.onInvoke(RTMPHandler.java:410)	at org.red5.server.net.rtmp.BaseRTMPHandler.messageReceived(BaseRTMPHandler.java:146)	at org.red5.server.net.rtmp.RTMPMinaIoHandler.messageReceived(RTMPMinaIoHandler.java:126)	at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:570)	at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:299)	at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilterChain.java:53)	at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:648)	at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:220)	at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:264)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)	at java.lang.Thread.run(Thread.java:613)