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java.lang.IllegalArgumentException: rawMessage can't be empty	at com.xpn.xwiki.XWiki.createUser(XWiki.java:3616)	at com.xpn.xwiki.api.XWiki.createUser(XWiki.java:1303)	at com.xpn.xwiki.api.XWiki.createUser(XWiki.java:1276)	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:597)	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:389)	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:378)	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:270)	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:252)	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:493)	at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)	at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:212)	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:247)	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:196)	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:161)	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:118)	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:44)	at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:298)	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:190)	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:57)	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transformOnce(MacroTransformation.java:184)	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:129)	at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:72)	at com.xpn.xwiki.doc.XWikiDocument.performSyntaxConversion(XWikiDocument.java:7471)	at com.xpn.xwiki.doc.XWikiDocument.performSyntaxConversion(XWikiDocument.java:7420)	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:835)	at com.xpn.xwiki.XWiki.getRenderedContent(XWiki.java:4324)	at com.xpn.xwiki.XWiki.include(XWiki.java:4254)	at com.xpn.xwiki.api.XWiki.includeTopic(XWiki.java:1583)	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:597)	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:389)	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:378)	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:270)	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:252)	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:332)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:196)	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:161)	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:116)	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1895)	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1833)	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:860)	at sun.reflect.GeneratedMethodAccessor129.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:389)	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:378)	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:270)	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:252)	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:332)	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:212)	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:247)	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:196)	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:161)	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:116)	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1895)	at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:154)	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:226)	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:117)	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:129)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at com.xpn.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:152)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:218)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:112)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)	at java.lang.Thread.run(Thread.java:662)