org.sonatype.aether.transfer.ArtifactNotFoundException: The repository system is offline but the artifact org.jenkins-ci.plugins.workflow:workflow-step-api:pom:${project.version} is not available in the local repository.
Caused: org.sonatype.aether.resolution.ArtifactResolutionException: The repository system is offline but the artifact org.jenkins-ci.plugins.workflow:workflow-step-api:pom:${project.version} is not available in the local repository.
   at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:538)
   at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:216)
   at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:193)
   at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:286)
Caused: org.apache.maven.project.ProjectBuildingException: Error resolving project artifact: The repository system is offline but the artifact org.jenkins-ci.plugins.workflow:workflow-step-api:pom:${project.version} is not available in the local repository. for project org.jenkins-ci.plugins.workflow:workflow-step-api:pom:${project.version}
   at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:296)
   at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:267)
   at org.netbeans.modules.maven.embedder.MavenEmbedder.buildProject(MavenEmbedder.java:414)
   at org.netbeans.modules.maven.nodes.DependencyNode.getRelocation(DependencyNode.java:1028)
   at org.netbeans.modules.maven.nodes.DependencyNode.access$1300(DependencyNode.java:161)
   at org.netbeans.modules.maven.nodes.DependencyNode$ExcludeTransitiveAction$2.performOperation(DependencyNode.java:974)
   at org.netbeans.modules.maven.nodes.DependencyNode$ExcludeTransitiveAction$2.performOperation(DependencyNode.java:946)
   at org.netbeans.modules.maven.model.Utilities.performPOMModelOperations(Utilities.java:337)
   at org.netbeans.modules.maven.model.Utilities.performPOMModelOperations(Utilities.java:288)
   at org.netbeans.modules.maven.nodes.DependencyNode$ExcludeTransitiveAction.runModifyExclusions(DependencyNode.java:1007)
   at org.netbeans.modules.maven.nodes.DependencyNode$ExcludeTransitiveAction.access$1200(DependencyNode.java:912)
   at org.netbeans.modules.maven.nodes.DependencyNode$ExcludeTransitiveAction$1.run(DependencyNode.java:940)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)