java.lang.NullPointerException
   at org.sonatype.aether.impl.internal.DefaultMetadataResolver.resolve(DefaultMetadataResolver.java:283)
   at org.sonatype.aether.impl.internal.DefaultMetadataResolver.resolveMetadata(DefaultMetadataResolver.java:177)
   at org.apache.maven.repository.internal.DefaultVersionResolver.resolveVersion(DefaultVersionResolver.java:211)
   at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:276)
   at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:220)
   at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:197)
   at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:323)
   at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:213)
   at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:381)
   at org.apache.maven.repository.legacy.LegacyRepositorySystem.resolve(LegacyRepositorySystem.java:352)
   at org.netbeans.modules.maven.embedder.MavenEmbedder.resolve(MavenEmbedder.java:215)
   at org.netbeans.modules.maven.embedder.NBRepositoryModelResolver.resolveModel(NBRepositoryModelResolver.java:105)
   at org.apache.maven.model.building.DefaultModelBuilder.importDependencyManagement(DefaultModelBuilder.java:942)
   at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:403)
   at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:374)
   at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:365)
   at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:232)
   at org.netbeans.modules.maven.embedder.EmbedderFactory.createModelLineage(EmbedderFactory.java:377)
   at org.netbeans.modules.maven.configurations.ProjectProfileHandlerImpl.getLineage(ProjectProfileHandlerImpl.java:103)
   at org.netbeans.modules.maven.configurations.ProjectProfileHandlerImpl.extractProfiles(ProjectProfileHandlerImpl.java:206)
   at org.netbeans.modules.maven.configurations.ProjectProfileHandlerImpl.getAllProfiles(ProjectProfileHandlerImpl.java:115)
   at org.netbeans.modules.maven.configurations.M2ConfigProvider.createProfilesList(M2ConfigProvider.java:305)
   at org.netbeans.modules.maven.configurations.M2ConfigProvider.getConfigurations(M2ConfigProvider.java:166)
   at org.netbeans.modules.maven.configurations.M2ConfigProvider.getConfigurations(M2ConfigProvider.java:197)
   at org.netbeans.modules.maven.configurations.M2ConfigProvider$1$1.run(M2ConfigProvider.java:128)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:425)
   at org.netbeans.modules.maven.configurations.M2ConfigProvider$1.propertyChange(M2ConfigProvider.java:126)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.netbeans.modules.maven.api.NbMavenProject.doFireReload(NbMavenProject.java:494)
   at org.netbeans.modules.maven.api.NbMavenProject.access$200(NbMavenProject.java:88)
   at org.netbeans.modules.maven.api.NbMavenProject$AccessorImpl.doFireReload(NbMavenProject.java:129)
   at org.netbeans.modules.maven.NbMavenProjectImpl.fireProjectReload(NbMavenProjectImpl.java:503)
   at org.netbeans.modules.maven.NbMavenProjectImpl$2.run(NbMavenProjectImpl.java:492)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)