java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.net.URLEncoder.encode(URLEncoder.java:205)
at com.google.appengine.tools.admin.AbstractServerConnection.buildQuery(AbstractServerConnection.java:117)
at com.google.appengine.tools.admin.AbstractServerConnection.send1(AbstractServerConnection.java:303)
at com.google.appengine.tools.admin.AbstractServerConnection.send(AbstractServerConnection.java:289)
at com.google.appengine.tools.admin.AbstractServerConnection.post(AbstractServerConnection.java:268)
at com.google.appengine.tools.admin.LoggingClientDeploySender.send(LoggingClientDeploySender.java:47)
at com.google.appengine.tools.admin.ResourceLimits.remoteRequest(ResourceLimits.java:174)
at com.google.appengine.tools.admin.ResourceLimits.request(ResourceLimits.java:139)
at com.google.appengine.tools.admin.AppAdminImpl.doUpdate(AppAdminImpl.java:566)
at com.google.appengine.tools.admin.AppAdminImpl.update(AppAdminImpl.java:57)
at com.google.appengine.tools.admin.AppCfg$UpdateAction.execute(AppCfg.java:1526)
at com.google.appengine.tools.admin.AppCfg.executeAction(AppCfg.java:393)
at com.google.appengine.tools.admin.AppCfg.(AppCfg.java:216)
at com.google.appengine.tools.admin.AppCfg.(AppCfg.java:116)
at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:112)
at com.google.appengine.appcfg.AbstractAppCfgMojo.executeAppCfgCommand(AbstractAppCfgMojo.java:259)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
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:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)

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