[SUREFIRE-2257] [REGRESSION] NPEx: Cannot invoke "Object.toString()" because "value" is null

**[Piotr Zygielo](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=pzygielo)** opened **[SUREFIRE-2257](https://issues.apache.org/jira/browse/SUREFIRE-2257?redirect=false)** and commented

On upgrading from 3.4.0 to 3.5.0 (so it works fine in 3.4.0), build breaks with following:

```
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.20.0:site (default-site) on project X: Failed to render site: Error generating maven-surefire-report-plugin:3.5.0:report-only report: Cannot invoke "Object.toString()" because "value" is null -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.20.0:site (default-site) on project X: Failed to render site
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:333)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
    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:906)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:255)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:201)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:361)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:314)
Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to render site
    at org.apache.maven.plugins.site.render.SiteMojo.execute (SiteMojo.java:119)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:328)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
    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:906)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:255)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:201)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:361)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:314)
Caused by: org.apache.maven.doxia.siterenderer.RendererException: Error generating maven-surefire-report-plugin:3.5.0:report-only report
    at org.apache.maven.plugins.site.render.ReportDocumentRenderer.renderDocument (ReportDocumentRenderer.java:210)
    at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render (DefaultSiteRenderer.java:300)
    at org.apache.maven.plugins.site.render.SiteMojo.renderNonDoxiaDocuments (SiteMojo.java:282)
    at org.apache.maven.plugins.site.render.SiteMojo.renderLocale (SiteMojo.java:147)
    at org.apache.maven.plugins.site.render.SiteMojo.execute (SiteMojo.java:112)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:328)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
    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:906)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:255)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:201)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:361)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:314)
Caused by: java.lang.NullPointerException: Cannot invoke "Object.toString()" because "value" is null
    at org.apache.maven.doxia.sink.impl.SinkUtils.getAttributeString (SinkUtils.java:188)
    at org.apache.maven.doxia.sink.impl.AbstractXmlSink.writeStartTag (AbstractXmlSink.java:126)
    at org.apache.maven.doxia.sink.impl.Xhtml5BaseSink.writeStartTag (Xhtml5BaseSink.java:1647)
    at org.apache.maven.doxia.sink.impl.AbstractXmlSink.writeStartTag (AbstractXmlSink.java:95)
    at org.apache.maven.doxia.sink.impl.Xhtml5BaseSink.anchor (Xhtml5BaseSink.java:1204)
    at org.apache.maven.doxia.sink.impl.AbstractSink.anchor (AbstractSink.java:354)
    at org.apache.maven.reporting.AbstractMavenReportRenderer.startSection (AbstractMavenReportRenderer.java:132)
    at org.apache.maven.reporting.AbstractMavenReportRenderer.startSection (AbstractMavenReportRenderer.java:116)
    at org.apache.maven.plugins.surefire.report.SurefireReportRenderer.renderSectionPackages (SurefireReportRenderer.java:220)
    at org.apache.maven.plugins.surefire.report.SurefireReportRenderer.renderBody (SurefireReportRenderer.java:119)
    at org.apache.maven.reporting.AbstractMavenReportRenderer.render (AbstractMavenReportRenderer.java:93)
    at org.apache.maven.plugins.surefire.report.AbstractSurefireReport.executeReport (AbstractSurefireReport.java:159)
    at org.apache.maven.reporting.AbstractMavenReport.generate (AbstractMavenReport.java:354)
    at org.apache.maven.plugins.site.render.ReportDocumentRenderer.renderDocument (ReportDocumentRenderer.java:199)
    at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render (DefaultSiteRenderer.java:300)
    at org.apache.maven.plugins.site.render.SiteMojo.renderNonDoxiaDocuments (SiteMojo.java:282)
    at org.apache.maven.plugins.site.render.SiteMojo.renderLocale (SiteMojo.java:147)
    at org.apache.maven.plugins.site.render.SiteMojo.execute (SiteMojo.java:112)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:328)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
    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:906)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:255)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:201)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:361)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:314)
```

maven 3.9.3, jdk 21

```
1. only skipped commits left to test
1. possible first bad commit: [05e4681f38f53c2a54b7671291ca02dc63586a98] [SUREFIRE-2227] Dynamically calculate xrefTestLocation
1. possible first bad commit: [f1a419a1457e5a83f9deb07a700a1376487f72ed] [SUREFIRE-2228] Upgrade to Doxia 2.0.0 Milestone Stack
```

(f1a419a1 failed to compile)



---

**Affects:** 3.5.0

**Attachments:**
- [3.4.0-surefire-report.png](https://issues.apache.org/jira/secure/attachment/13071124/3.4.0-surefire-report.png) (_18.57 kB_)
- [screenshot-1.png](https://issues.apache.org/jira/secure/attachment/13071141/screenshot-1.png) (_154.82 kB_)
- [screenshot-2.png](https://issues.apache.org/jira/secure/attachment/13071142/screenshot-2.png) (_79.69 kB_)
- [surefire-3.5.0-2-g69c1b46d8.png](https://issues.apache.org/jira/secure/attachment/13071144/surefire-3.5.0-2-g69c1b46d8.png) (_16.75 kB_)

**Issue Links:**
- [DOXIA-744](https://issues.apache.org/jira/browse/DOXIA-744) Null Pointer Exception
 (_**"is duplicated by"**_)
- [SUREFIRE-2275](https://issues.apache.org/jira/browse/SUREFIRE-2275) Cannot invoke "Object.toString()" because "value" is null
 (_**"is duplicated by"**_)
- [SUREFIRE-2261](https://issues.apache.org/jira/browse/SUREFIRE-2261) NullPointerException when generating a test report
 (_**"is duplicated by"**_)

**Remote Links:**
- [GitHub Pull Request #774
](https://github.com/apache/maven-surefire/pull/774)


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[SUREFIRE-2257] [REGRESSION] NPEx: Cannot invoke "Object.toString()" because "value" is null #2941

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[SUREFIRE-2257] [REGRESSION] NPEx: Cannot invoke "Object.toString()" because "value" is null #2941

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