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java.lang.NullPointerException: 	at hudson.plugins.android_emulator.EmulatorConfig.getGeneratedAvdName(EmulatorConfig.java:123)	at hudson.plugins.android_emulator.EmulatorConfig.getAvdName(EmulatorConfig.java:117)	at hudson.plugins.android_emulator.EmulatorConfig.getAvdName(EmulatorConfig.java:102)	at hudson.plugins.android_emulator.AndroidEmulator.getConfigHash(AndroidEmulator.java:154)	at hudson.plugins.android_emulator.AndroidEmulator.getConfigHash(AndroidEmulator.java:126)	at hudson.plugins.android_emulator.TaskDispatcher.getEmulatorConfigHashForTask(TaskDispatcher.java:110)	at hudson.plugins.android_emulator.TaskDispatcher.canTake(TaskDispatcher.java:37)	at hudson.model.queue.QueueTaskDispatcher.canTake(QueueTaskDispatcher.java:101)	at hudson.model.Queue$BuildableItem.canTake(Queue.java:1511)	at hudson.model.Queue$BuildableItem.getCauseOfBlockage(Queue.java:1500)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:616)	at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:258)	at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104)	at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:83)	at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)	at org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:51)	at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)	at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:72)	at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134)	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)	at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)	at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)	at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)	at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:150)	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:270)	at org.apache.commons.jelly.tags.core.CoreTagLibrary$1.run(CoreTagLibrary.java:98)	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)	at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)	at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:63)	at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:146)	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:270)	at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)	at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:98)	at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:270)	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)	at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)	at org.apache.commons.jelly.tags.core.OtherwiseTag.doTag(OtherwiseTag.java:41)	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:270)	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)	at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)	at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:270)	at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)	at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:119)	at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)	at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:63)	at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:63)	at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:53)	at org.kohsuke.stapler.jelly.JellyRequestDispatcher.forward(JellyRequestDispatcher.java:55)	at hudson.widgets.HistoryWidget.doAjax(HistoryWidget.java:191)	at sun.reflect.GeneratedMethodAccessor195.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:616)	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:282)	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:149)	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:88)	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:104)	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:561)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:646)	at org.kohsuke.stapler.MetaClass$12.dispatch(MetaClass.java:374)	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:561)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:646)	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:234)	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:561)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:646)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:477)	at org.kohsuke.stapler.Stapler.service(Stapler.java:159)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)	at winstone.ServletConfiguration.execute(ServletConfiguration.java:249)	at winstone.RequestDispatcher.forward(RequestDispatcher.java:335)	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:78)	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)	at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:61)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)	at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)	at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)	at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)	at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)	at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)	at java.lang.Thread.run(Thread.java:636)