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https://issues.apache.org/jira/browse/MNG-7759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17711516#comment-17711516
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Tamas Cservenak commented on MNG-7759:
--------------------------------------
You can grab a build from PR from my Google Drive if okay with you:
https://drive.google.com/drive/folders/1NnJQr2paviDXafkBRGDGdgV1fvC_9Az1?usp=sharing
> java.lang.NullPointerException at
> org.apache.maven.repository.internal.DefaultModelCache.newInstance
> (DefaultModelCache.java:37)
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: MNG-7759
> URL: https://issues.apache.org/jira/browse/MNG-7759
> Project: Maven
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.9.1
> Reporter: Rich M
> Assignee: Tamas Cservenak
> Priority: Major
> Fix For: 3.9.2, 4.0.0-alpha-6, 4.0.0
>
>
> I am using grails-maven-plugin, and the execution fails with Maven version
> 3.9.1. It works perfectly fine with Maven version 3.8.8.
>
> [ERROR] Failed to execute goal org.grails:grails-maven-plugin:2.4.4:clean
> (default-clean) on project XX: Failed to create classpath for Grails
> execution.: NullPointerException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.grails:grails-maven-plugin:2.4.4:clean (default-clean) on project
> XX: Failed to create classpath for Grails execution.
> at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
> (MojoExecutor.java:347)
> at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
> (MojoExecutor.java:330)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:213)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:175)
> at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
> (MojoExecutor.java:76)
> at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
> (MojoExecutor.java:163)
> at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
> (DefaultMojosExecutionStrategy.java:39)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:160)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:105)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:73)
> at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:53)
> at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:118)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:827)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:272)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:195)
> 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:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch
> (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
> (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main
> (Launcher.java:347)
> Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to create
> classpath for Grails execution.
> at org.grails.maven.plugin.AbstractGrailsMojo.resolveBuildDependencies
> (AbstractGrailsMojo.java:585)
> at org.grails.maven.plugin.AbstractGrailsMojo.createExecutionContext
> (AbstractGrailsMojo.java:380)
> at org.grails.maven.plugin.AbstractGrailsMojo.runGrails
> (AbstractGrailsMojo.java:371)
> at org.grails.maven.plugin.AbstractGrailsMojo.runGrails
> (AbstractGrailsMojo.java:334)
> at org.grails.maven.plugin.GrailsCleanMojo.execute
> (GrailsCleanMojo.java:35)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:126)
> at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
> (MojoExecutor.java:342)
> at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
> (MojoExecutor.java:330)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:213)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:175)
> at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
> (MojoExecutor.java:76)
> at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
> (MojoExecutor.java:163)
> at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
> (DefaultMojosExecutionStrategy.java:39)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:160)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:105)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:73)
> at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:53)
> at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:118)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:827)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:272)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:195)
> 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:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch
> (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
> (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main
> (Launcher.java:347)
> Caused by: java.lang.NullPointerException
> at org.apache.maven.repository.internal.DefaultModelCache.newInstance
> (DefaultModelCache.java:37)
> at
> org.apache.maven.repository.internal.DefaultModelCacheFactory.createCache
> (DefaultModelCacheFactory.java:35)
> at org.apache.maven.project.DefaultProjectBuilder.createModelCache
> (DefaultProjectBuilder.java:1005)
> at org.apache.maven.project.DefaultProjectBuilder.build
> (DefaultProjectBuilder.java:305)
> at org.apache.maven.project.DefaultProjectBuilder.build
> (DefaultProjectBuilder.java:295)
> at org.grails.maven.plugin.AbstractGrailsMojo.getPluginProject
> (AbstractGrailsMojo.java:821)
> at org.grails.maven.plugin.AbstractGrailsMojo.resolveBuildDependencies
> (AbstractGrailsMojo.java:558)
> at org.grails.maven.plugin.AbstractGrailsMojo.createExecutionContext
> (AbstractGrailsMojo.java:380)
> at org.grails.maven.plugin.AbstractGrailsMojo.runGrails
> (AbstractGrailsMojo.java:371)
> at org.grails.maven.plugin.AbstractGrailsMojo.runGrails
> (AbstractGrailsMojo.java:334)
> at org.grails.maven.plugin.GrailsCleanMojo.execute
> (GrailsCleanMojo.java:35)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:126)
> at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
> (MojoExecutor.java:342)
> at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
> (MojoExecutor.java:330)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:213)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:175)
> at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
> (MojoExecutor.java:76)
> at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
> (MojoExecutor.java:163)
> at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
> (DefaultMojosExecutionStrategy.java:39)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:160)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:105)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:73)
> at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:53)
> at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:118)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:827)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:272)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:195)
> 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:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch
> (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
> (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main
> (Launcher.java:347)
> [ERROR]
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