hello ,
i try to install dspace 6.3 on centos8 with apache-maven-3.8.1 and  
openjdk11
where i execute $mvn package -X                //for debug
it ends with: 

[INFO] ----------------------< org.dspace.modules:solr 
>-----------------------
[INFO] Building DSpace SOLR :: Local Customizations 6.3                  
[9/11]
[INFO] --------------------------------[ war 
]---------------------------------
[INFO] 
------------------------------------------------------------------------
[INFO] Reactor Summary for DSpace Assembly and Configuration 6.3:
[INFO] 
[INFO] DSpace Addon Modules ............................... SUCCESS [  
0.612 s]
[INFO] DSpace Kernel :: Additions and Local Customizations  SUCCESS [  
3.153 s]
[INFO] DSpace XML-UI (Manakin) :: Local Customizations .... SUCCESS [03:51 
min]
[INFO] DSpace JSP-UI :: Local Customizations .............. SUCCESS [02:12 
min]
[INFO] DSpace RDF :: Local Customizations ................. SUCCESS [03:20 
min]
[INFO] DSpace REST :: Local Customizations ................ SUCCESS [02:22 
min]
[INFO] DSpace SWORD :: Local Customizations ............... SUCCESS [03:08 
min]
[INFO] DSpace SWORD v2 :: Local Customizations ............ SUCCESS [02:56 
min]
[INFO] DSpace SOLR :: Local Customizations ................ FAILURE [  
0.209 s]
[INFO] DSpace OAI-PMH :: Local Customizations ............. SKIPPED
[INFO] DSpace Assembly and Configuration .................. SKIPPED
[INFO] 
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] 
------------------------------------------------------------------------
[INFO] Total time:  17:56 min
[INFO] Finished at: 2021-05-03T14:36:24+01:00
[INFO] 
------------------------------------------------------------------------

[ERROR] Failed to execute goal on project solr: Could not resolve 
dependencies for project org.dspace.modules:solr:war:6.3: Failed to collect 
dependencies at org.dspace:dspace-solr:jar:classes:6.3 -> 
org.apache.solr:solr-core:jar:4.10.4 -> 
org.restlet.jee:org.restlet:jar:2.1.1: Failed to read artifact descriptor 
for org.restlet.jee:org.restlet:jar:2.1.1: Could not transfer artifact 
org.restlet.jee:org.restlet:pom:2.1.1 from/to maven-default-http-blocker 
(http://0.0.0.0/): Blocked mirror for repositories: [maven-snapshots 
(http://oss.sonatype.org/content/repositories/snapshots, default, 
snapshots), maven-restlet (http://maven.restlet.org, default, 
releases+snapshots), apache.snapshots 
(http://repository.apache.org/snapshots, default, disabled)] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute 
goal on project solr: Could not resolve dependencies for project 
org.dspace.modules:solr:war:6.3: Failed to collect dependencies at 
org.dspace:dspace-solr:jar:classes:6.3 -> 
org.apache.solr:solr-core:jar:4.10.4 -> 
org.restlet.jee:org.restlet:jar:2.1.1
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:269)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: org.apache.maven.project.DependencyResolutionException: Could 
not resolve dependencies for project org.dspace.modules:solr:war:6.3: 
Failed to collect dependencies at org.dspace:dspace-solr:jar:classes:6.3 -> 
org.apache.solr:solr-core:jar:4.10.4 -> 
org.restlet.jee:org.restlet:jar:2.1.1
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve 
(DefaultProjectDependenciesResolver.java:178)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:243)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: org.eclipse.aether.collection.DependencyCollectionException: 
Failed to collect dependencies at org.dspace:dspace-solr:jar:classes:6.3 -> 
org.apache.solr:solr-core:jar:4.10.4 -> 
org.restlet.jee:org.restlet:jar:2.1.1
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies
 
(DefaultDependencyCollector.java:288)
    at 
org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies 
(DefaultRepositorySystem.java:284)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve 
(DefaultProjectDependenciesResolver.java:169)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:243)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: org.eclipse.aether.resolution.ArtifactDescriptorException: 
Failed to read artifact descriptor for org.restlet.jee:org.restlet:jar:2.1.1
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom 
(DefaultArtifactDescriptorReader.java:255)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor
 
(DefaultArtifactDescriptorReader.java:171)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.resolveCachedArtifactDescriptor
 
(DefaultDependencyCollector.java:538)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.getArtifactDescriptorResult
 
(DefaultDependencyCollector.java:523)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:410)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies
 
(DefaultDependencyCollector.java:254)
    at 
org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies 
(DefaultRepositorySystem.java:284)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve 
(DefaultProjectDependenciesResolver.java:169)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:243)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: org.eclipse.aether.resolution.ArtifactResolutionException: Could 
not transfer artifact org.restlet.jee:org.restlet:pom:2.1.1 from/to 
maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for 
repositories: [maven-snapshots 
(http://oss.sonatype.org/content/repositories/snapshots, default, 
snapshots), maven-restlet (http://maven.restlet.org, default, 
releases+snapshots), apache.snapshots 
(http://repository.apache.org/snapshots, default, disabled)]
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve 
(DefaultArtifactResolver.java:424)
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts 
(DefaultArtifactResolver.java:229)
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact 
(DefaultArtifactResolver.java:207)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom 
(DefaultArtifactDescriptorReader.java:240)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor
 
(DefaultArtifactDescriptorReader.java:171)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.resolveCachedArtifactDescriptor
 
(DefaultDependencyCollector.java:538)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.getArtifactDescriptorResult
 
(DefaultDependencyCollector.java:523)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:410)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies
 
(DefaultDependencyCollector.java:254)
    at 
org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies 
(DefaultRepositorySystem.java:284)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve 
(DefaultProjectDependenciesResolver.java:169)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:243)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: org.eclipse.aether.transfer.ArtifactTransferException: Could not 
transfer artifact org.restlet.jee:org.restlet:pom:2.1.1 from/to 
maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for 
repositories: [maven-snapshots 
(http://oss.sonatype.org/content/repositories/snapshots, default, 
snapshots), maven-restlet (http://maven.restlet.org, default, 
releases+snapshots), apache.snapshots 
(http://repository.apache.org/snapshots, default, disabled)]
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads 
(DefaultArtifactResolver.java:520)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve 
(DefaultArtifactResolver.java:401)
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts 
(DefaultArtifactResolver.java:229)
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact 
(DefaultArtifactResolver.java:207)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom 
(DefaultArtifactDescriptorReader.java:240)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor
 
(DefaultArtifactDescriptorReader.java:171)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.resolveCachedArtifactDescriptor
 
(DefaultDependencyCollector.java:538)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.getArtifactDescriptorResult
 
(DefaultDependencyCollector.java:523)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:410)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies
 
(DefaultDependencyCollector.java:254)
    at 
org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies 
(DefaultRepositorySystem.java:284)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve 
(DefaultProjectDependenciesResolver.java:169)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:243)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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: org.eclipse.aether.transfer.NoRepositoryConnectorException: 
Blocked mirror for repositories: [maven-snapshots 
(http://oss.sonatype.org/content/repositories/snapshots, default, 
snapshots), maven-restlet (http://maven.restlet.org, default, 
releases+snapshots), apache.snapshots 
(http://repository.apache.org/snapshots, default, disabled)]
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads 
(DefaultArtifactResolver.java:506)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve 
(DefaultArtifactResolver.java:401)
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts 
(DefaultArtifactResolver.java:229)
    at 
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact 
(DefaultArtifactResolver.java:207)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom 
(DefaultArtifactDescriptorReader.java:240)
    at 
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor
 
(DefaultArtifactDescriptorReader.java:171)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.resolveCachedArtifactDescriptor
 
(DefaultDependencyCollector.java:538)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.getArtifactDescriptorResult
 
(DefaultDependencyCollector.java:523)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:410)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse 
(DefaultDependencyCollector.java:506)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:458)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency
 
(DefaultDependencyCollector.java:362)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process 
(DefaultDependencyCollector.java:349)
    at 
org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies
 
(DefaultDependencyCollector.java:254)
    at 
org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies 
(DefaultRepositorySystem.java:284)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve 
(DefaultProjectDependenciesResolver.java:169)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies 
(LifecycleDependencyResolver.java:243)
    at 
org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies
 
(LifecycleDependencyResolver.java:147)
    at 
org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved 
(MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    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)
[ERROR] 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, 
please read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the 
command
[ERROR]   mvn <args> -rf :solr



Please, how can i correct this issue?,
thanks

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