java.lang.IllegalArgumentException: Bad level "WARN"

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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.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.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$1.messageReceived(AbstractIoFilterChain.java:648)
at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:220)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:613)

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