Failed to execute goal org.sonatype.plugins:nexus-staging-maven-plugin:1.6.8:deploy (default-deploy) on project gestionexpress-ear: Failed to deploy artifacts: Could not transfer artifact py.com.personal:gestionexpress-ear:ear:1.0.0-20190719.193329-4 from/to snapshots (http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/): Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.sonatype.plugins:nexus-staging-maven-plugin:1.6.8:deploy (default-deploy) on project gestionexpress-ear: Failed to deploy artifacts: Could not transfer artifact py.com.personal:gestionexpress-ear:ear:1.0.0-20190719.193329-4 from/to snapshots (http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/): Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots.
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
	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:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	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)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to deploy artifacts: Could not transfer artifact py.com.personal:gestionexpress-ear:ear:1.0.0-20190719.193329-4 from/to snapshots (http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/): Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots.
	at org.sonatype.nexus.maven.staging.deploy.DeployMojo.execute(DeployMojo.java:216)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
	... 20 more
Caused by: org.apache.maven.artifact.deployer.ArtifactDeploymentException: Failed to deploy artifacts: Could not transfer artifact py.com.personal:gestionexpress-ear:ear:1.0.0-20190719.193329-4 from/to snapshots (http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/): Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots.
	at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:143)
	at org.sonatype.nexus.maven.staging.deploy.strategy.AbstractDeployStrategy.deployUp(AbstractDeployStrategy.java:213)
	at org.sonatype.nexus.maven.staging.deploy.strategy.DeferredDeployStrategy.finalizeDeploy(DeferredDeployStrategy.java:86)
	at org.sonatype.nexus.maven.staging.deploy.DeployMojo.execute(DeployMojo.java:213)
	... 22 more
Caused by: org.eclipse.aether.deployment.DeploymentException: Failed to deploy artifacts: Could not transfer artifact py.com.personal:gestionexpress-ear:ear:1.0.0-20190719.193329-4 from/to snapshots (http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/): Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots.
	at org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:317)
	at org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:245)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.deploy(DefaultRepositorySystem.java:413)
	at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:139)
	... 25 more
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact py.com.personal:gestionexpress-ear:ear:1.0.0-20190719.193329-4 from/to snapshots (http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/): Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots.
	at org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:43)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:355)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector.put(BasicRepositoryConnector.java:274)
	at org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:311)
	... 28 more
Caused by: org.apache.maven.wagon.TransferFailedException: Failed to transfer file: http://nexus.sis.personal.net.py:8081/repository/wvas-snapshots/py/com/personal/gestionexpress-ear/1.0.0-SNAPSHOT/gestionexpress-ear-1.0.0-20190719.193329-4.ear. Return code is: 400, ReasonPhrase: Repository does not allow updating assets: wvas-snapshots.
	at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:627)
	at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:541)
	at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:523)
	at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:517)
	at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:497)
	at org.eclipse.aether.transport.wagon.WagonTransporter$PutTaskRunner.run(WagonTransporter.java:644)
	at org.eclipse.aether.transport.wagon.WagonTransporter.execute(WagonTransporter.java:427)
	at org.eclipse.aether.transport.wagon.WagonTransporter.put(WagonTransporter.java:410)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$PutTaskRunner.runTask(BasicRepositoryConnector.java:510)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:350)
	... 30 more


For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException