java.lang.NullPointerException
        at org.netbeans.modules.maven.MavenProjectPropsImpl.get(MavenProjectPropsImpl.java:105)
        at org.netbeans.modules.maven.MavenProjectPropsImpl.get(MavenProjectPropsImpl.java:85)
        at org.netbeans.modules.maven.api.NbMavenProject.getPackagingType(NbMavenProject.java:290)
        at org.netbeans.modules.maven.apisupport.MavenApisupportLookupProvider$Provider.checkNbm(MavenApisupportLookupProvider.java:93)
        at org.netbeans.modules.maven.apisupport.MavenApisupportLookupProvider$Provider.<init>(MavenApisupportLookupProvider.java:81)
        at org.netbeans.modules.maven.apisupport.MavenApisupportLookupProvider.createAdditionalLookup(MavenApisupportLookupProvider.java:68)
        at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.doDelegate(LookupProviderSupport.java:184)
        at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.<init>(LookupProviderSupport.java:130)
        at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.<init>(LookupProviderSupport.java:118)
        at org.netbeans.spi.project.support.LookupProviderSupport.createCompositeLookup(LookupProviderSupport.java:89)
        at org.netbeans.modules.maven.NbMavenProjectImpl$LazyLookup.beforeLookup(NbMavenProjectImpl.java:847)
        at org.openide.util.lookup.ProxyLookup.lookup(ProxyLookup.java:197)
        at org.netbeans.api.project.ProjectUtils.getSources(ProjectUtils.java:101)
        at org.netbeans.modules.java.source.tasklist.ErrorAnnotator$1.run(ErrorAnnotator.java:297)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1070)