# Error on nexus starts

## post by squal78 on Jul 17, 2024

Squal Goupil (squal78)

since few days, we’ve got an issue when starting nexus service

we’ve got a lot of issue trying to access to [Central Repository: org/sonatype/nexus/assemblies](https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/)…

first error like this look like that :

```auto
2024-07-17 09:07:03,506+0200 WARN  [FelixStartLevel]  *SYSTEM org.ops4j.pax.url.mvn.internal.AetherBasedResolver - Error resolving artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01: [Could not transfer artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01 from/to central (https://repo1.maven.org/maven2/): transfer failed for https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/nexus-startup-feature/3.41.0-01/nexus-startup-feature-3.41.0-01-features.xml]
java.io.IOException: Error resolving artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01: [Could not transfer artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01 from/to central (https://repo1.maven.org/maven2/): transfer failed for https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/nexus-startup-feature/3.41.0-01/nexus-startup-feature-3.41.0-01-features.xml]
        at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.configureIOException(AetherBasedResolver.java:803)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:774)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:657)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:598)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:565)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:555)
at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:123)
at java.net.URL.openStream(URL.java:1093)
at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:114)
at org.apache.karaf.features.internal.service.RepositoryImpl.<init>(RepositoryImpl.java:51)
at org.apache.karaf.features.internal.service.RepositoryCacheImpl.create(RepositoryCacheImpl.java:51)
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:386)
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:381)
at org.apache.karaf.features.internal.service.BootFeaturesInstaller.addRepositories(BootFeaturesInstaller.java:118)
at org.apache.karaf.features.internal.service.BootFeaturesInstaller.installBootFeatures(BootFeaturesInstaller.java:87)
at org.apache.karaf.features.internal.service.BootFeaturesInstaller.start(BootFeaturesInstaller.java:81)
at org.apache.karaf.features.internal.osgi.Activator.doStart(Activator.java:214)
at org.apache.karaf.util.tracker.BaseActivator.start(BaseActivator.java:92)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:698)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2402)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2308)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1539)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
at java.lang.Thread.run(Thread.java:750)
Suppressed: shaded.org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01 from/to central (https://repo1.maven.org/maven2/): transfer failed for https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/nexus-startup-feature/3.41.0-01/nexus-startup-feature-3.41.0-01-features.xml
                at shaded.org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:52)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:368)
at shaded.org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:75)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:642)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:262)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:489)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:192)
at shaded.org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:247)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:767)
... 22 common frames omitted
2024-07-17 09:07:03,508+0200 ERROR [FelixStartLevel]  *SYSTEM org.apache.karaf.features.internal.service.BootFeaturesInstaller - Error installing boot feature repository mvn:org.sonatype.nexus.assemblies/nexus-startup-feature/3.41.0-01/xml/features
java.lang.RuntimeException: Error resolving artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01: [Could not transfer artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01 from/to central (https://repo1.maven.org/maven2/): transfer failed for https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/nexus-startup-feature/3.41.0-01/nexus-startup-feature-3.41.0-01-features.xml]
        at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:121)
at org.apache.karaf.features.internal.service.RepositoryImpl.<init>(RepositoryImpl.java:51)
at org.apache.karaf.features.internal.service.RepositoryCacheImpl.create(RepositoryCacheImpl.java:51)
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:386)
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:381)
at org.apache.karaf.features.internal.service.BootFeaturesInstaller.addRepositories(BootFeaturesInstaller.java:118)
at org.apache.karaf.features.internal.service.BootFeaturesInstaller.installBootFeatures(BootFeaturesInstaller.java:87)
at org.apache.karaf.features.internal.service.BootFeaturesInstaller.start(BootFeaturesInstaller.java:81)
at org.apache.karaf.util.tracker.BaseActivator.start(BaseActivator.java:92)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:698)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2402)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2308)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1539)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(Felix.java:308)
at java.lang.Thread.run(Thread.java:750)
Caused by: java.io.IOException: Error resolving artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01: [Could not transfer artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01 from/to central (https://repo1.maven.org/maven2/): transfer failed for https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/nexus-startup-feature/3.41.0-01/nexus-startup-feature-3.41.0-01-features.xml]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.configureIOException(AetherBasedResolver.java:803)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:774)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:657)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:598)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:565)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:555)
at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:123)
at java.net.URL.openStream(URL.java:1093)
at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:114)
... 15 common frames omitted
      
Caused by: shaded.org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact org.sonatype.nexus.assemblies:nexus-startup-feature:xml:features:3.41.0-01 from/to central (https://repo1.maven.org/maven2/): transfer failed for https://repo1.maven.org/maven2/org/sonatype/nexus/assemblies/nexus-startup-feature/3.41.0-01/nexus-startup-feature-3.41.0-01-features.xml
                at shaded.org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:52)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:368)
at shaded.org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:75)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:642)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:262)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:489)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:192)
at shaded.org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:247)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:767)
... 22 common frames omitted
```

in my view, there is no change on network or proxy settings

Many thanks for your helps

---

## post by squal78 on Jul 17, 2024

the error come from that the etc/karaf/org.ops4j.pax.url.mvn.cfg file was empty

we take a backup one and service came back

## post by mpiggott on Jul 17, 2024

Matthew Piggott (mpiggott)

I believe this issue was fixed in a later version, you may wish to upgrade.