Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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3.6.1
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None
Description
when launching Maven on maven-site:
$ mvn clean [INFO] Scanning for projects... [ERROR] Internal error: java.lang.NullPointerException -> [Help 1] org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main (MavenCli.java:192) 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: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.model.plugin.DefaultReportingConverter.convert (DefaultReportingConverter.java:243) at org.apache.maven.model.plugin.DefaultReportingConverter.convert (DefaultReportingConverter.java:213) at org.apache.maven.model.plugin.DefaultReportingConverter.convertReporting (DefaultReportingConverter.java:140) at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:479) at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:432) at org.apache.maven.project.DefaultProjectBuilder.build (DefaultProjectBuilder.java:616)
caused by the fact that there is no <reports></reports> elements in following reportSet:
<reporting> <excludeDefaults>true</excludeDefaults> <outputDirectory>${site.output}</outputDirectory> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-project-info-reports-plugin</artifactId> <reportSets> <reportSet><!-- don't execute inherited reports, since some are useless and cannot be removed --> <configuration> <skip>true</skip> </configuration> </reportSet>