gistfile1.txt

java.lang.NullPointerException
  at com.google.apphosting.utils.config.BackendsYamlReader$BackendsYaml.toXml(BackendsYamlReader.java:44)
	at com.google.apphosting.utils.config.BackendsYamlReader.parse(BackendsYamlReader.java:185)
	at com.google.apphosting.utils.config.BackendsYamlReader.parse(BackendsYamlReader.java:166)
	at com.google.appengine.tools.admin.Application.<init>(Application.java:221)
	at com.google.appengine.tools.admin.Application.readApplication(Application.java:290)
	at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:186)
	at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:102)
	at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:98)
	at com.google.appengine.AbstractAppCfgMojo.executeAppCfgCommand(AbstractAppCfgMojo.java:242)
	at com.google.appengine.appcfg.Update.execute(Update.java:32)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
	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:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
	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:477)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)